Smartwatches / Compare

Garmin Vivoactive 6 vs Xiaomi Watch S4

A

Product A: Garmin

Vivoactive 6

93 of 150 known

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B

Product B: Xiaomi

Watch S4

83 of 150 known

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Every value links to where we found it.

Only differences

AGarmin Vivoactive 6

BXiaomi Watch S4

General

7 of 10 differ

Series

Vivoactive1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Watch S3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q4 compares the Watch S4 with its predecessor, the Xiaomi Watch S3, in the same Watch S line.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

010-02985-00, 010-02985-05, 010-02985-01, 010-02985-02, 010-02985-03, 010-02985-041Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

M2425W1, BHR9195GL, BHR9197GL, BHR9199GL4Maker spec sheet (PDF)i02.appmifile.com/229_operatorx_operatorx_xm/29/08/2026/0506b1d933bea38854867532d7b1e253.pdfRead 15 October 2026EU Declaration of Conformity for radio equipment model M2425W1, Smart Watch, listed on Xiaomi's declaration page as Xiaomi Watch S4. The 41 mm Watch S4 is M2502W1 and is a separate product. The standards list covers Bluetooth, NFC and GNSS and has no cellular standard.6Maker product pagemi.com/global/service/support/declaration.htmlRead 15 October 2026Declaration page lists Xiaomi Watch S4 M2425W1 with EU DoC and PSTI documents, separate from Watch S4 41mm M2502W1.7Spec databasegsmarena.com/xiaomi_watch_s4-13476.phpRead 15 October 2026Spec page lists models M2424W1 and M2425W1. Only M2425W1 is documented for the global model, so M2424W1 is not stored.11Retailer pageeuronics.ee/en/phones/watches/smart-watches/bhr9195gl/xiaomi-watch-s4-black-smart-watchRead 15 October 2026Retailer product code BHR9195GL for the black Xiaomi Watch S4, 44.5 g, 486 mAh, Bluetooth 5.3, 4G No.13Retailer pagepood.datafox.ee/xiaomi-watch-s4-rainbow-smart-watchRead 15 October 2026Rainbow product code BHR9199GL.14Retailer pageachatmoinscher.com/comparateur-de-prix-Montre-connectee-sportive/montre-intelligente-xiaomi-s4-bhr9197gl-gris-argente-6941812707432.htmlRead 15 October 2026Silver product code BHR9197GL.

GTIN / EAN

0753759342807, 0753759342814, 0753759342821, 07537593428388Maker spec sheet (PDF)asset.conrad.com/media10/add/160267/c1/-/de/003413014DS00/datenblatt-3413014-garmin-smartwatch-schwarz-grau.pdfRead 7 October 2026Original Garmin German specification sheet redistributed by Conrad, exact sold-SKU EAN table. 010-02985-00/01/02/03 map respectively to black/bone/green/pink. Later NZ -04/-05 combinations have no barcode here and do not inherit a variant barcode. EAN list identifies these original marketed packages, not every regional bundle.

6941812732403, 6941812707432, 694181271166812Retailer pagepood.datafox.ee/xiaomi-s4-smartwatch-blackRead 15 October 2026Black BHR9195GL, EAN 6941812732403.13Retailer pagepood.datafox.ee/xiaomi-watch-s4-rainbow-smart-watchRead 15 October 2026Rainbow BHR9199GL, EAN 6941812711668.14Retailer pageachatmoinscher.com/comparateur-de-prix-Montre-connectee-sportive/montre-intelligente-xiaomi-s4-bhr9197gl-gris-argente-6941812707432.htmlRead 15 October 2026Silver BHR9197GL, EAN 6941812707432.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

1 April 20254Press releasegarmin.com/en-US/newsroom/press-release/wearables-health/meet-vivoactive-6-the-latest-health-and-fitness-smartwatch-from-garminRead 5 October 2026Actual maker announcement. Planned purchase availability is corroborated by retrospective actual-release evidence below.

29 October 20247Spec databasegsmarena.com/xiaomi_watch_s4-13476.phpRead 15 October 2026Spec page: announced and released 29 October 2024 in China. The global model followed in March 2025.

Status

Available1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Available2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026The global product page is live with specs and a buy link. GSMArena lists it as available.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Garmin Vivoactive 59Spec databasethe5krunner.com/specs/garmin/vivoactive-6Read 7 October 2026Exact General table explicitly names Vivoactive 5 as predecessor. Canonical existing product checked. No speculative successor stored.27Maker product pagegarmin.com/nl-NL/blogRead 23 October 2026Garmin's Dutch blog calls the vivoactive 6 the successor of the popular vivoactive 5.

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Xiaomi Watch S5 46mm15Reviewgsmarena.com/xiaomi_unveils_smart_band_10_pro_buds_6_sound_play_speaker-news-73032.phpRead 23 October 2026GSMArena says the Xiaomi Watch S5 comes as the successor to the Watch S4.

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$299.995Press releasegarmin.com/en-US/newsroom/press-release/wearables-health/meet-vivoactive-6-the-latest-health-and-fitness-smartwatch-from-garminRead 5 October 2026Maker explicitly publishes unqualified US suggested retail 299.99 USD for original four finishes. Later colour/strap combinations do not inherit variant launch prices.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€159.9910Press articlefonearena.com/blog/447624/xiaomi-buds-5-pro-watch-s4-electric-scooter-5-max-price-global.htmlRead 15 October 2026Price 159.99 euros for the Watch S4. The article lists no colours and gives no tax treatment. Retail listings put the Rainbow edition at 169.99 euros, which is not a launch price and is not stored.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

NZ, US1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Exact regional storefront establishes NZ. Original US maker launch separately establishes US.4Press releasegarmin.com/en-US/newsroom/press-release/wearables-health/meet-vivoactive-6-the-latest-health-and-fitness-smartwatch-from-garminRead 5 October 2026

EU10Press articlefonearena.com/blog/447624/xiaomi-buds-5-pro-watch-s4-electric-scooter-5-max-price-global.htmlRead 15 October 2026Euro price from European announcement coverage. The global launch was at MWC 2025.

ColoursiThe maker's own colour names

Slate with Black Band, Metallic Pink Dawn with Bone band, Lunar Gold with Bone Band, Metallic Jasper Green with Jasper Green Band, Metallic Pink Dawn with Pink Dawn Band, Slate with Pebble Grey Band1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Black, Silver, Rainbow1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Silver, Rainbow and Black.

Segment

Smartwatch1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Smartwatch2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026The page sits under Wearables as the Xiaomi Watch S4 smartwatch with a rotating crown and 150+ sports modes.

OS updates promisediYears of explicitly promised OS updates. A security-only support period does not establish an OS-upgrade promise.

Not available

Not available

Security updates untiliExact end date published for security-update support of this model. Do not calculate it from a stated number of years. A security-only period does not promise OS upgrades.

Not available

2 March 20275Maker spec sheet (PDF)i02.appmifile.com/791_operatorx_operatorx_xm/05/03/2026/e12c7be544083cc45f26f933fa49ae28.pdfRead 15 October 2026UK PSTI statement for M2425W1 dated 2025/2/6: the defined support period is until 3/2/2027. Xiaomi's other PSTI statements use month/day/year, such as 11/15/2026 and 2/27/2028, so this reads as 2 March 2027. This is a security-support period, not an OS-upgrade promise.

Case

6 of 8 differ

Case sizeiMarketed case-size options. The marketed size can differ from physical case height, such as ceramic editions. Base dimensions describe the smallest base-material case.

42mm6Spec databasethe5krunner.com/specs/garmin/vivoactive-6Read 5 October 2026Published marketed single 42 mm case. Exact physical 42.2 mm comes from maker.

47.3mm1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026The maker states 47.3 mm x 47.3 mm x 12.0 mm. The separate 41 mm Watch S4 has its own page and is not included.

Case shape

Round1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Round3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: round AMOLED display and 47.3 mm diameter.

Case materialiMaterial of the housing body, not just the bezel. Use Mixed when the maker describes a mixture of housing/frame materials. Read the published-material field for the parts and proportions.

Fibre-reinforced polymer1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Aluminium1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Aluminum alloy frame. The bezel is stainless steel according to the support FAQ.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: middle frame entirely aluminium alloy, bezel stainless steel.

Case material (as published)

Fibre-reinforced polymer housing. Anodised aluminium bezel.1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Exact General table distinguishes fibre-reinforced polymer housing from anodised aluminium bezel.

Aluminium alloy middle frame with PVD coating and stainless steel bezel3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2 and the S3 comparison: aluminium alloy with PVD coating, stainless steel bezel.

BackiMaterial of the back of the smallest base-material case. Other materials or regional editions can differ. See source notes.

Not available

Not available

Case dimensionsiPhysical case height, width and thickness. The source note states exclusions such as the heart-rate sensor protrusion.

Height42.2Width42.2Thickness10.9mm(1.7 × 1.7 × 0.4 in)1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Physical Size table gives 42.2 x 42.2 x 10.9 mm. Thickness inclusion of sensor projection is not separately stated.

Height47.3Width47.3Thickness12mm(1.9 × 1.9 × 0.5 in)1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 202647.3 x 47.3 x 12.0 mm. The maker excludes the strap and protrusions. The FAQ gives 14.13 mm thickness with the heart rate bump.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: diameter 47.3 mm, thickness 12 mm excluding the deco and heart rate sensor.

Weight (case only)iWatch body without a strap. An unqualified published weight must not be assumed to exclude the strap.

23g(0.8 oz)1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Body-only mass explicitly precedes separate mass with included band.

44.5g(1.6 oz)1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 202644.5 g approx., without the in-box strap.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: 44.5 +/- 1 g, excluding the strap.

Weight with strapiWatch with the stated strap attached. Strap material and case size belong in the source note. Reviewer measurements belong in measured fields.

36g(1.3 oz)1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Published complete watch mass with supplied silicone band. Leather packages excluded.

Not available

Durability

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Water resistanceiStatic water-pressure rating in atmospheres. It is not a safe swimming or diving depth. Diving limits are listed separately.

5ATM3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026

5ATM1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 20265 ATM, described as 50 m static pressure. The maker says it is not suitable for hot showers, saunas or diving.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q9: 5 ATM, equivalent to 50 m, for pool and shallow-water use and not for diving.

Water resistance standard

Not available

Not available

Dust and water rating

Not available

Not available

Dive rating

Not available

Not available

Max dive depthiMaker-rated depth for the stated diving use, not a conversion from the water-resistance pressure rating.

Not available

Not available

MIL-STD-810iMaker claim that the watch was tested against specified MIL-STD-810 methods. It is not a guarantee for every military-standard test.

Not available

Not available

MIL-STD-810 tests

Not available

Not available

Operating temperatureiPublished operating range. Source notes identify on-wrist limits and other operating conditions. Storage or charging limits are excluded.

Min-20Max60°C3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Specifications printed page 87. Operating range is separate from USB charging 0-45 C.

Min-10Max45°C9Retailer pageteamplush.by/enRead 15 October 2026Same reseller copy of the manual: working temperature -10 to 45 C.

Display

7 of 14 differ

Display type

OLED1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

OLED1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Spec row: 1.43-inch AMOLED display. No LTPO is stated.

Display type (as published)

AMOLED1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

AMOLED1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Spec row: AMOLED display.

Screen sizeiPublished active display diagonal for a rectangular display, or diameter for a round display. Do not calculate it from pixels or display area.

1.2in(3 cm)1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

1.43in(3.6 cm)1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 20261.43-inch AMOLED display, 466 x 466 pixels.

Resolution

390 × 390px1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

466 × 466px1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Pixel densityiPublished pixel density. A rectangular diagonal formula must not be applied to a round display.

Not available

326ppi1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Published PPI 326.

Display area

Not available

Not available

Touchscreen

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Max refresh rateiHighest published display refresh rate in active operation.

Not available

60Hz1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 202660 Hz refresh rate. The maker notes it may vary across interfaces.

Min refresh rateiLowest published display refresh rate, usually in always-on mode. It is not the active-use minimum unless stated.

Not available

Not available

Peak brightnessiMaker peak-brightness claim. It may apply to a small area or bright ambient light. Full-screen limits and battery/temperature conditions belong in source notes.

Not available

2,200nits1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Peak 2200 nits is when only part of the screen lights up. HBM 1500 nits is the full-screen maximum. No reviewer measurement is substituted.

Minimum brightness

Not available

Not available

Always-on display

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Support FAQ has the AOD controls. The overview page announces colour always-on displays.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q26: Always-on display supported, with Smart or Scheduled modes.

Display cover

Gorilla Glass1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Other glass3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: Panda Glass cover. It is not a named Gorilla Glass or sapphire.

Display cover (as published)

Corning Gorilla Glass 31Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Panda Glass3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: Panda Glass.

Platform

5 of 15 differ

Platform

Proprietary11Spec databasegadgetsandwearables.com/technical-specs/garmin-vivoactive-6Read 7 October 2026Exact device Operating system row says Garmin proprietary. Current maker Connect IQ ecosystem corroborates. No Wear OS or Linux inference. Incorrect secondary screen size/bezel or training rows do not override maker facts.

Proprietary1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Operating system: Xiaomi HyperOS 2, Xiaomi's own software. No Wear OS or other third-party watch platform is named.

OS at launch

Garmin proprietary OS11Spec databasegadgetsandwearables.com/technical-specs/garmin-vivoactive-6Read 7 October 2026Exact Daily smart features row labels operating system at launch Garmin proprietary. Launch firmware number is not stated and not guessed.

Xiaomi HyperOS 21Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Software

Not available

Not available

Latest OS

Garmin software 18.2912Maker product pageforums.garmin.com/sports-fitness/healthandwellness/f/vivoactive-6-series/443701/vivoactive-6-software-version---18-29Read 7 October 2026Current exact-model announcement by Garmin-Zac states 18.29 at 100% Release. September 2026 rollout through Garmin Connect Mobile/Express. This is stable device software, not Connect IQ API level or GPS module firmware, and not a beta. No update was performed.

Not available

Works with

iOS, Android1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Android, iOS1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Supports Android 8.0 and above, or iOS 14.0 and above.

Phone requirement

Not available

Android 8.0 or later, or iOS 14.0 or later, with the Mi Fitness app1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026The Mi Fitness app is required for pairing according to the support FAQ.

App store

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Not available

Voice assistants

Not available

Not available

Chipset

Not available

Not available

Process

Not available

Not available

CPU cores

Not available

Not available

CPU configuration

Not available

Not available

Max CPU clock

Not available

Not available

GPU

Not available

Not available

Low-power coprocessor

Not available

Not available

Memory

1 of 2 differ

RAMiKeep published GB values as stated. Convert a source explicitly labelled MB using 1000 MB per GB and preserve its original figure and unit in the note. Do not assume MB means MiB. Convert explicit MiB or GiB to decimal GB through their byte definitions, recording the conversion in the note. This normalization does not establish an exact physical byte count.

Not available

Not available

StorageiTotal built-in storage the maker states, in decimal GB. Space available to the user is lower and goes in the source note. A figure the maker gives only as available space is not stored.

8GB1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Not available

Health sensors

3 of 8 differ

Heart rate sensor

Garmin Elevate wrist heart rate monitor1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Heart rate sensor (with blood oxygen sensor)1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Sensors row: heart rate sensor (with blood oxygen sensor). No sensor generation is named.

ECG capabilityiElectrical heart sensing hardware with an ECG capability. The ECG app can require an eligible country, age and paired phone.

No7Reviewlivescience.com/health/exercise/garmin-vivoactive-6-reviewRead 5 October 2026Exact hardware discussion expressly cannot take ECG readings.

Not available

Blood oxygen sensingiBlood-oxygen sensing capability. App availability and medical status vary by market.

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Skin temperature sensingiA sensor or supported function that measures skin temperature. It is not a core-body thermometer.

No13Maker product pagegarmin.com/en-GB/which-watch/wellness-tracking/compareRead 7 October 2026Original current maker wellness comparison header identifies Vivoactive 6. Skin temperature cell is empty while adjacent Venu 4/X1 cells have checks. Tom’s Guide explicitly states no onboard skin-temperature sensor. Ambient/internal activity temperature and external tempe are separate. Original public var content table read.25Reviewtomsguide.com/wellness/smartwatches/i-wore-the-garmin-vivoactive-6-for-a-month-and-it-has-nearly-everything-i-want-in-a-smartwatchRead 7 October 2026Exact model review expressly states there is no onboard skin-temperature sensor. Independently corroborates the original maker wellness comparison matrix. Core/body and external ambient temperatures are different functions.

Not available

Blood pressure featureiPublished blood-pressure feature category. Hypertension notifications are not numerical blood-pressure readings.

Not available

Not available

Body composition sensor

Not available

Not available

Skin conductance (EDA)

Not available

Not available

Medical clearancesiNamed regulatory clearances and their jurisdiction. General water resistance or an ECG sensor does not establish medical clearance.

Not available

Not available

Motion and environment sensors

1 of 9 differ

Accelerometer

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Barometric altimeter

No6Spec databasethe5krunner.com/specs/garmin/vivoactive-6Read 5 October 2026Explicitly no barometric altimeter. No floor-climb sensor inherited from Venu.

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Compass

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Sensors row lists an electronic compass.

Ambient light sensor

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 20263Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Brightness Auto adjusts to ambient light.

Depth gauge

Not available

Not available

Depth gauge rangeiPublished measurement range of the depth gauge, distinct from maximum diving depth and water-pressure resistance.

Not available

Not available

Water temperature sensor

Not available

Not available

Health and fitness

4 of 5 differ

Health featuresiSupported health functions with country, phone and subscription restrictions in the source notes. Upcoming functions are not counted as available.

Continuous heart rate, Heart rate alerts, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking, Cycle tracking2Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Exact Health & Wellness table and manual definitions. Sleep HRV and sleep stages are distinct. Body Battery is energy monitoring, not an inferred training-readiness score. Pulse Ox is wellness monitoring and unavailable in some countries.

Continuous heart rate, Blood oxygen app, Sleep tracking, Sleep stages, Stress tracking, Cycle tracking2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Overview: heart rate, stress, blood oxygen and sleep monitoring, all-day options that need to be switched on. These are not medical features.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Health pages: all-day heart rate, blood oxygen and stress, sleep stages (deep, light, REM, awake) and the Cycles app.

Fitness featuresiSupported workout functions. A sport-profile name alone does not prove advanced metrics such as running power or running dynamics. Trackback follows the recorded route back to the start. A compass arrow that points straight to the start does not count.

Automatic workout detection, VO2 max, Recovery advice, Running dynamics, Pool swim, Open water swim, Strength rep counting, Interval workouts, Golf courses, Running power, Route navigation, Trackback2Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Matching current maker technical table confirms named metrics. Sport-profile names alone are not metric evidence. Current exact owner manual separately confirms running power, course navigation and TracBack. No feature is borrowed from a sibling watch or conflicting secondary database.3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Current exact manual page 57 expressly supports running power from watch sensors or compatible dynamics accessory. Pages 70-73 support saved-course navigation and TracBack along the travelled route. These current software capabilities are not asserted as launch features.

Automatic workout detection, VO2 max, Training load, Running dynamics, Pool swim, Open water swim2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Overview: running form recognition (vertical ratio, vertical amplitude, ground contact time) and 150+ sports modes.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Workout Q1: auto detect for walking, running, cycling, rower, elliptical and jump rope. Q2 workout data: vertical stride ratio, vertical amplitude and ground contact time in running. 17 modes give pro data including pool and open water swimming. The Training State app manages training load.11Retailer pageeuronics.ee/en/phones/watches/smart-watches/bhr9195gl/xiaomi-watch-s4-black-smart-watchRead 15 October 2026Retailer spec tab lists maximal oxygen uptake (VO2 max) measurements as Yes.

Sport profilesiPublished count of distinct sport/activity profiles. A claim such as 180+ is not an exact integer count.

Not available

Not available

Dive modesiActual supported dive modes. Water resistance or a depth app alone does not establish decompression-capable scuba support.

Snorkel23Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 7 October 2026Exact current maker Activity profiles table, On the water row explicitly lists Snorkeling. Stored named surface-snorkeling activity profile only, as confirmed by main. No depth gauge, decompression, scuba gas mode or rated operating dive depth is implied. 5 ATM is not converted to safe diving depth.

Not available

External sensorsiTypes of external workout sensors the watch can pair with. GPS reception, phone data and built-in sensors do not qualify.

Heart rate strap, Speed and cadence, Foot pod3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Matching Wireless Sensors table. Vivoactive supports external HR, speed/cadence and foot pods. A generic ANT+ radio does not prove additional sensor classes.

Not available

Safety

4 of 6 differ

Fall detectioniAutomatic fall detection. Incident detection restricted to recorded workouts is not counted as general fall detection.

No14Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 7 October 2026Complete Safety and Tracking Features section says incident detection only during certain outdoor GPS activities and requires a connected phone. Schema explicitly excludes workout-only incident detection from general fall detection. No all-day fall monitoring claimed. Current September maker update reserves new all-day fall detection for Venu 4.

Not available

Car crash detection

Not available

Not available

Emergency SOSiA manual emergency alert to emergency services or preset contacts. Source notes identify the recipient, paired-phone requirement and country limits. Satellite is listed separately.

Yes3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Assistance sends location/message to configured emergency contacts through a paired phone with data coverage. No standalone satellite or cellular emergency call inferred.

Not available

Emergency sireniPublished or measured siren sound level in decibels. Audible distance alone does not establish this value. Measurement distance belongs in source notes.

Not available

Not available

Live location sharingiShares live location during supported use. A paired phone or data subscription may be required.

Yes3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Safety/tracking sections require Garmin Connect, a paired compatible phone and data coverage.

Not available

Dedicated LED flashlightiA dedicated hardware LED flashlight. Lighting the display white is not counted.

No13Maker product pagegarmin.com/en-GB/which-watch/wellness-tracking/compareRead 7 October 2026Exact maker Built-in flashlight comparison row is absent for Vivoactive 6 and checked for Venu 4/X1. Current manual Using the Flashlight Screen explicitly turns the screen into a flashlight. No dedicated hardware LED inferred from the screen feature.26Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/garmin-vivoactive-6Read 7 October 2026Exact review Extra Features describes a screen-based flashlight and expressly contrasts it with dedicated LED flashlights on other Garmin watches. Original manual Using the Flashlight Screen and exact maker comparison matrix corroborate absence of a dedicated hardware LED.

Not available

Positioning

3 of 3 differ

PositioningiPublished satellite systems and signal bands. Do not infer bands from dual-frequency support alone.

GPS, GLONASS, Galileo, QZSS, BeiDou1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

GPS (L1 + L5), Galileo (E1 + E5a), GLONASS (G1), BeiDou (B1I + B1C + B2a), QZSS (L1 + L5)1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Satellite systems: GPS, Galileo, Glonass, BeiDou and QZSS. The overview page says L1+L5 dual-frequency GNSS. The per-constellation bands come from the reseller copy of the manual regulatory table.7Spec databasegsmarena.com/xiaomi_watch_s4-13476.phpRead 15 October 2026Positioning: GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS.9Retailer pageteamplush.by/enRead 15 October 2026Reseller page reproducing the M2425W1 manual regulatory table: GPS L1 / Galileo E1 / GLONASS G1 / BDS B1I, B1C / QZSS L1 at 1559-1610 MHz, and GPS L5 / Galileo E5a / BDS B2A / QZSS L5 at 1164-1215 MHz. This agrees with the maker's L1+L5 claim and GSMArena. Xiaomi's own manual PDF was not found, so the reseller copy is the source.

Dual-band GNSSiMaker-stated dual-frequency satellite reception. Supported constellations and signal bands are listed separately.

No7Reviewlivescience.com/health/exercise/garmin-vivoactive-6-reviewRead 5 October 2026Exact review explicitly lacks dual-band GPS. No chipset-based assumption.

Yes2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Overview: L1+L5 dual-frequency GNSS of five satellite positioning systems from an independent chip.

Offline mapsiMap data stored on the watch and usable without live phone data. GPX routes or breadcrumb tracks alone are not offline maps.

No15Reviewdcrainmaker.com/2025/04/garmin-vivoactive-6-details-hands-everything.htmlRead 7 October 2026Exact base watch hands-on explicitly no maps on the watch and breadcrumb course trail instead. Current manual course/TracBack instructions corroborate. Garmin Google Maps Android phone app integration is not stored offline map data.

Not available

Connectivity

9 of 15 differ

BluetoothiPublished Bluetooth support for this model. The version is recorded separately. Unknown version does not mean the radio is absent.

Not available

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Bluetooth version

Not available

5.31Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Wireless connectivity: Bluetooth 5.3.7Spec databasegsmarena.com/xiaomi_watch_s4-13476.phpRead 15 October 2026Bluetooth 5.3, A2DP, LE.9Retailer pageteamplush.by/enRead 15 October 2026The copied table lists Bluetooth 5.3 at 2400-2483.5 MHz.

Wi-FiiPublished Wi-Fi support for this model. The standard and bands are recorded separately. Unknown standard does not mean Wi-Fi is absent.

Yes16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026The same compilation declares WLAN 802.11b/g/n, so a Wi-Fi radio is fitted.

No7Spec databasegsmarena.com/xiaomi_watch_s4-13476.phpRead 15 October 2026WLAN: No.9Retailer pageteamplush.by/enRead 15 October 2026The copied radio table lists only GNSS, Bluetooth and NFC, with no Wi-Fi radio.

Wi-Fi standard

Wi-Fi 416Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Original maker-hosted commercial Vivoactive 6/A04951 certification compilation. Declared WLAN mode 802.11b/g/n HT20 establishes Wi-Fi 4. Wi-Fi 5/6/7 not inferred from firmware version. EU DoC independently maps A04951 to Vivoactive 6.

Not available

Wi-Fi bands

2.4 GHz16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Commercial-model SUBTEL table expressly gives Wi-Fi 2412–2462 MHz. FCC RF inventory includes only WLAN 2.4 GHz. Regional enabled channels differ, but only 2.4 GHz band is published.

Not available

CellulariTrue when a cellular edition is sold. A variant row states whether that individual model has cellular hardware.

No16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Complete A04951 declared transmitter inventory contains Wi-Fi, Bluetooth, ANT and NFC, no cellular modem. Digital Citizen expressly says no LTE mobile connectivity available, with no sold cellular edition found across complete six-SKU maker range. Each NZ variant explicitly false.24Reviewandroidcentral.com/wearables/garmin/garmin-vivoactive-6-vs-google-pixel-watch-3Read 7 October 2026Exact comparison explicitly says LTE option is not available on Vivoactive 6 at all. Common maker full SKU inventory and declared A04951 radio modules corroborate marketed absence.

No7Spec databasegsmarena.com/xiaomi_watch_s4-13476.phpRead 15 October 2026Versions: eSIM and NFC (China), Bluetooth and NFC (China), Bluetooth only (International). The global page and the EU declaration list no cellular radio, so the global model has no cellular.

Network

Not available

Not available

4G bandsiPublished LTE bands for the stated regional cellular model. Do not transfer bands to another region or Wi-Fi-only model.

Not available

Not available

5G bandsiPublished 5G NR bands for the stated regional cellular model. RedCap support does not establish conventional full-bandwidth phone 5G.

Not available

Not available

NFCiSome regions sell an NFC edition, so it is per variant.

Yes16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Commercial-model certification Modules row explicitly NFC and 13.56 MHz. Maker Garmin Pay claim is separate.

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026NFC: Supported. The maker says availability may vary by region.9Retailer pageteamplush.by/enRead 15 October 2026The copied regulatory table lists an NFC operating frequency of 13.56 MHz.

Contactless payments

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026NFC payment supports Mastercard and Visa terminals. Availability varies by region and issuing bank.

Payment services

Garmin Pay1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Xiaomi Pay3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026NFC related: bank cards are added through Mi Fitness, Device, Apps, Xiaomi Pay.

Ultra-wideband

No11Spec databasegadgetsandwearables.com/technical-specs/garmin-vivoactive-6Read 7 October 2026Exact UWB row expressly No. Complete manufacturer A04951 declared radio inventory independently lists NFC, ANT, Bluetooth BR/EDR/LE and 2.4 GHz Wi-Fi, with no UWB hardware. Model identity proved by original EU DoC. This is not inferred from another Garmin device.

Not available

Satellite

None16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Complete declared transmitter inventory has no satellite transmitter. GNSS receivers do not imply communications. Safety manual needs phone data, and remote inReach features require a separate inReach communicator. Each base NZ variant has no standalone satellite communication.

Not available

ANT+

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Not available

Audio

3 of 4 differ

Speaker

Not available

Yes1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026

Microphones

017Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/garmin-vivoactive-6Read 7 October 2026Exact standard, only-size watch review Extra Features explicitly no microphone for calls. Gadgets & Wearables exact Microphone No and Android Central exact hardware omissions corroborate total absence. No voice recorder or local voice assistant in complete maker manual. Speaker value remains omitted because another review contradicts speaker absence.24Reviewandroidcentral.com/wearables/garmin/garmin-vivoactive-6-vs-google-pixel-watch-3Read 7 October 2026Exact Hardware and specs table Mic and speaker row No, and prose explicitly calls microphone a hardware omission. This corroborates zero physical microphones, not merely disabled voice calling. Inaccurate 390 x 309 typo in the display row does not override original maker resolution.

21Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Spec row: 2 mics.

Calls on the watchiVoice-call capability of the marketed model, including sold cellular editions. Variant radio capability and paired-phone requirements still apply.

None14Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 7 October 2026Receiving an Incoming Phone Call explicitly requires using the connected phone to talk. Accept/decline controls and Android text replies do not mean voice calls on the watch.

Phone only1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Bluetooth calling: Supported while the watch stays connected to the phone's Bluetooth. Voice calls from third-party apps are not supported.

Music on the watchiPlays audio stored on the watch. Remote control of phone playback or streaming alone does not qualify.

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q28: local music playback on the watch. An Android phone downloads the music. An iPhone cannot download songs, but songs already on the watch play.

Controls

4 of 5 differ

ButtonsiPhysical controls used to operate the watch, excluding the rotating crown and strap-release buttons. A clickable rotating crown is counted only in Crown.

23Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Printed page 6 complete overview diagram identifies START and BACK, two physical buttons.

13Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: the 2 o'clock position has the function button and rotating crown. The 4 o'clock position has the power button. The crown is counted only in Crown.

Named operating buttonsiNames of operating buttons, excluding the crown and strap-release controls.

START button, BACK button3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Printed page 6 names START and BACK physical buttons in the complete overview diagram.

Power button (4 o'clock)3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: power button at 4 o'clock.

CrowniA crown that rotates to control the interface. A round push button that does not rotate is not a crown.

None14Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 7 October 2026Complete Overview and Using the Touchscreen describe only two push buttons START/BACK, taps and swipes. No rotating operating crown in the full controls inventory. A round push button does not count as crown.24Reviewandroidcentral.com/wearables/garmin/garmin-vivoactive-6-vs-google-pixel-watch-3Read 7 October 2026Design and display paragraph explicitly distinguishes Vivoactive 6 touchscreen and two hardware buttons from Pixel Watch 3 rotating crown. Original complete maker overview supplies the same control inventory.

Rotating2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026The overview describes a classic rotating crown.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q2: stainless steel rotating crown that also works as a function button.

Rotating bezeliPhysical rotation or touch gestures around the display edge. A fixed decorative bezel is None.

None14Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 7 October 2026Complete controls inventory uses two push buttons and touchscreen taps/swipes. Decorative anodised-aluminium bezel is fixed. No physical or touch rotation control in the complete operating instructions.

None3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q11: the bezel is a removable decorative part that twists on for installation. The maker describes no bezel input.

Gestures

Raise and turn wrist to wake display, Cover display with palm to return to watch face and dim display14Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 7 October 2026Exact manual touchscreen instruction and Display and Brightness Settings Wake On Gesture row. These gestures operate the display/interface. No double-pinch or voice gesture inferred.

Raise to wake, Double-tap to wake, Wrist flip, Wrist shake, Finger snap, Fist clench2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Quick gestures and a classic rotating crown are listed. The support FAQ names the gestures.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q24 lists wrist flip, wrist shake, finger snap and fist. Fist works only with HyperOS 2 phones. Raise to wake and double-tap to wake are in the display settings.

Battery and charging

9 of 13 differ

Battery capacityiPublished battery capacity for the stated case size. Rated and typical capacity are distinguished in source notes.

220mAh16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026A04951 FCC declared product accessory battery 361-00162-00 rating 3.87 V, 220 mAh. Stated component rating, not measured discharge or estimated from runtime. Original EU DoC explicitly connects A04951 to Vivoactive 6. Single-size base hardware only. Other model batteries are not transferred.

486mAh1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Capacity 486 mAh. Rated or typical is not stated.

Claimed battery lifeiMaker endurance claims with distinct operating modes and case sizes. With solar describes augmentation of that estimate, not hardware capability. Use false for ordinary claims without solar augmentation, true for explicitly solar-aided claims, and omit it when solar qualification is unclear. Source notes state AOD, GNSS, music and solar conditions. Do not create a normal-use row from an AOD-only claim. Low power denotes the maker battery-saver mode. Keep its typical, light-use and always-on claims separate from standard-mode claims. GPS power saving identifies an intermediate reduced-accuracy GNSS saving preset. Source notes retain the maker's preset name and published conditions. Max battery GPS is the distinct maximum-saving claim. When the maker has only one GPS saving preset, it is GPS power saving.

AGarmin Vivoactive 6

Mode	With solar	Hours (h)
Smartwatch	No	264
Always-on	No	120
Low power	No	504
GPS	No	21
GPS, all systems	No	17
GPS, all systems with music	No	8

Source1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Exact size table distinguishes smartwatch, always-on and GNSS/music modes. Days convert exactly to hours. Current owner manual corroborates non-AOD modes.

BXiaomi Watch S4

Mode	With solar	Hours (h)
Smartwatch	No	360
Always-on	No	120

Source2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Up to 15 days typical usage, tested by Xiaomi Internal Labs with factory defaults, AOD off, 100 messages a day, 200 wrist raises a day, 90 minutes of GNSS sports a week and 10-minute heart rate checks. The FAQ gives 14.5 days with an iPhone and 5 days with the Smart AOD option on. Days are converted exactly to hours.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Charging and Battery Q1: typical 15 days (14.5 with an iPhone) and AOD 5 days, with the stated test conditions.

Smartwatch mode (claimed)iMaker normal-use smartwatch claim without solar. A watch with only an explicit AOD-mode claim has no value here. Workloads differ and source notes must be read.

264h=CalculatedFrom Claimed battery life

360h=CalculatedFrom Claimed battery life

AOD battery life (up to)iMaker claimed smartwatch endurance with the always-on display enabled and without solar, for the base case. Source notes preserve workload and case conditions. This is a claim, not a measured test or an AOD-off estimate.

120h=CalculatedFrom Claimed battery life

120h=CalculatedFrom Claimed battery life

GPS mode (claimed)iMaker regular GPS/GNSS activity claim without solar, for the base case. AOD, multi-band, music and power-saving conditions have separate rows when published.

21h=CalculatedFrom Claimed battery life

Not available

Solar chargingiPublished solar charging hardware capability. An ordinary battery estimate without solar augmentation does not prove that the watch lacks solar charging hardware.

Not available

Not available

Charging methodiThe connection at the watch, not the cable end at the USB adapter. A proprietary inductive puck is not Qi unless interoperability is explicitly established.

Proprietary plug1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Magnetic pins1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Charging port: 2-pin magnetic charging dock.

Charging guidanceiPublished charging requirements, nominal estimates and compatibility guidance. Keep adapter ratings separate from power accepted by the watch.

Not available

2-pin magnetic charging dock with a USB-A cable. The FAQ asks for a USB-A charger with 5 V output and at least 0.5 A.1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026The support FAQ gives the supply requirement.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Charging Q2: USB-A charger with 5 V and at least 0.5 A output.

Max charging power (watch)iPublished maximum charging power at the watch. Adapter rating or charger input power does not prove the power accepted by the watch.

Not available

Not available

Fast chargingiAn explicit fast-charging capability claim. A short charging time or high adapter wattage alone does not qualify.

Not available

Yes2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026Overview headline: 5 minutes of fast charging delivers 2 days of usage.

Quick charge claimiMaker claim for usage from a short charge. Source notes identify the usage workload, such as normal use or sleep tracking.

Not available

Charge time5 minUse time48 h2Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 20265 minutes of charging for 2 days of usage. The FAQ says this follows the typical battery model, which is the typical-use workload.3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Charging Q1: 5 minutes of charging provides a 2-day boost under the typical battery model.

Charge 0 to 80% (claimed)iMaker claim for charging an empty battery to 80%. Charger and approximate qualifiers belong in source notes.

Not available

Not available

Full charge time (claimed)iMaker advertised nominal full-charge duration. Approximate or theoretical maker estimates are allowed, with their conditions in source notes. Partial-charge intervals do not qualify. Measured 0 to 100% tests have a separate field.

Not available

60min3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Charging Q1 and Q2: about 60 minutes to fully charge.

Measured

1 of 4 differ

Peak brightness (measured)iReviewer measurement. Source notes state screen area, mode and ambient light. A small-area peak claim cannot be replaced with a full-screen measurement.

Not available

Not available

Battery life (measured)iReviewer-observed mixed-use endurance. Source notes state case size, AOD, workout use and whether it was a complete discharge. Extrapolation from partial discharge is excluded.

Not available

Not available

Battery tests (measured)iReviewer-observed endurance, with case size and test settings in source notes. Partial-discharge projections are not stored as measured endurance.

AGarmin Vivoactive 6

Test	Hours (h)
GPS activity	20

Source20Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/garmin-vivoactive-6Read 7 October 2026Exact review Standard model, One size only. Review Battery Life explicitly measured 20 hours in GPS-Only mode. Published testing method runs activity recording from full charge until empty. General comparison method keeps default settings, with exact review GPS-only mode explicit. AOD brightness, firmware, temperatures, sensors/music are not separately published. No 7%/hour projection or maker 21 h claim substituted. Only this full-cycle GPS row stored, mixed-use complete endpoints unproved.21Reviewoutdoorgearlab.com/topics/camping-and-hiking/best-gps-watch/how-we-testRead 7 October 2026Published method explicitly runs continuous activity recording from full charge until empty. This establishes actual complete discharge, not extrapolation from one-hour drain. Exact tested GPS-only mode and 20-hour value are in the model review.22Reviewoutdoorgearlab.com/topics/camping-and-hiking/best-gps-watchRead 7 October 2026Battery Life method says everything kept at default settings in battery tests. Exact model review separately identifies GPS-only rather than all-systems for the stored observed 20-hour test. No unpublished screen setting inferred.

BXiaomi Watch S4

Test	Hours (h)
Mixed use, always-on	48

Source8Reviewgsmarena.com/xiaomi_watch_s4_review-news-67715.phpRead 15 October 2026Reviewer used AOD, notifications, a one-hour daily workout and sleep tracking. The most was three days when the watch nearly died, and two days was a consistent result. Stored as about 48 hours. Firmware and display brightness are not stated.

Full charge time (measured)iReviewer measurement from empty to full, not 0-80% or a charge from 5%. Source notes name the charger and case size.

Not available

Not available

Strap

5 of 6 differ

Lug widthiDistance between standard strap attachment lugs, not the decorative width of a proprietary strap. Unknown for custom connectors unless the maker publishes lug width.

20mm1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

22mm3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q7: strap width 22 mm.

Quick-release strapiThe supplied strap can be detached through its quick-release mechanism. Compatibility with quick-release replacement straps alone does not qualify.

Yes1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Yes3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q6: the watch supports quick-release straps released through the spring bar.

Strap systemiPublished attachment system and compatible case sizes. Proprietary connectors are distinguished from standard spring bars.

20 mm industry-standard quick-release bands18Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 7 October 2026Exact NZ sold SKU General Quick Release bands row explicitly Yes (20 mm, Industry standard). Existing supplied strap quick release and width preserved. Not QuickFit, and optional accessory fit range is not substituted for supplied 125–190 mm strap.

22 mm quick-release straps with spring bars3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Q6 and Q7: quick-release spring-bar straps, any 22 mm strap.

Strap materialiMaterial of the supplied strap for the stated package. Do not substitute material from another band sold separately.

Silicone1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Fluoroelastomer3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Spec page names fluororubber straps for Black and Silver. Fluororubber is stored as fluoroelastomer.

Strap

Not available

Fluororubber strap3Maker product pagemi.com/global/support/faq/details/KA-517264Read 15 October 2026Spec page strap rows for Black and Silver.

Strap sizesiPublished wrist-circumference range for the stated strap or case. Source notes distinguish an overall compatible wrist range from one supplied strap size.

AGarmin Vivoactive 6

Wrist (min) (mm)	Wrist (max) (mm)
125	190

Source1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

BXiaomi Watch S4

Size	Wrist (min) (mm)	Wrist (max) (mm)
Black fluororubber strap	140	210

Source1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026The Black and Silver fluororubber straps have an adjustable length of 140-210 mm approx. The maker publishes strap length, stored as the wrist range. The Rainbow set with fluororubber and nylon straps is 135-210 mm.

Regulatory

3 of 3 differ

FCC ID

IPH-0495116Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Commercial Vivoactive 6/A04951 identity and every original FCC test-report cover explicitly IPH-04951. Exact physical hardware identifier, no sibling radio certification.

Not available

SAR limb (US)iPublished limb/wrist SAR for the stated base regional model under the US regime. Other case sizes or radio versions can differ. Head or body SAR is excluded.

0.31W/kg16Regulatory filingstatic.garmin.com/pumac/Vivoactive%C2%A06.pdfRead 7 October 2026Original FCC SAR report FA482809, printed page 4 Statement of Compliance. Highest published US extremity summary 0.31 W/kg, 10 g at 0 mm, date of test 2024-09-18. Wrist exposure method uses back of watch against phantom, printed page 21. Not EU 0.38 limb or torso 1.05. US summary precision retained rather than substituting detailed WLAN cell 0.312.

Not available

SAR limb (EU)iPublished limb/wrist SAR for the stated base regional model under the EU regime. Other case sizes or radio versions can differ. Head or body SAR is excluded.

0.38W/kg3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Exact Specifications printed page 87 publishes EU limb SAR 0.38 W/kg for this hardware case.

0.232W/kg9Retailer pageteamplush.by/enRead 15 October 2026Same reseller copy: maximum SAR on the wrist 0.232 W/kg with no gap, against a 4.0 W/kg wrist limit averaged over 10 g, under the EU declaration. The near-mouth value of 0.132 W/kg is a body value and is not stored.

Other certifications

EU RoHS 2011/65/EU and applicable amendments, EU Radio Equipment Directive 2014/53/EU, EU battery legislation 2008/98/EC as amended by (EU) 2023/154219Regulatory filingstatic.garmin.com/pumac/vivoactive%206_DoC-EU.pdfRead 7 October 2026Original signed manufacturer EU Declaration of Conformity, English first page. Exact Model Numbers A04951, vivoactive 6. Issued 2024-11-11, revised 2025-06-18. These are maker declared compliance claims, not medical clearances. No IP, military or diving standard inferred.

EU RED 2014/53/EU conformity, RoHS 2011/65/EU conformity4Maker spec sheet (PDF)i02.appmifile.com/229_operatorx_operatorx_xm/29/08/2026/0506b1d933bea38854867532d7b1e253.pdfRead 15 October 2026The declaration covers RE Directive 2014/53/EU and RoHS Directive 2011/65/EU.

In the box

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In the box

Vivoactive 6, USB-C charging/data cable, Documentation1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

Xiaomi Watch S4 (including bezel and strap), Magnetic charging dock, User manual (including warranty notice)1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Package contents row.

Power adapter in boxiA mains/USB power adapter is supplied. A charging cable, inductive puck or charging dock alone does not count.

No1Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Complete exact-SKU box table has cable and documentation, no power adapter.

No1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Package contents list only the watch, magnetic charging dock and manual. No power adapter.

Links

Not compared

Product page

www.garmin.com/en-NZ/p/pn/010-02985-001Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026Public current maker page directly downloaded. Full exact-SKU specs and box tables read from GarminAppBootstrap. Boolean yes/no classes inspected. No authenticated data or bot restriction bypassed.

www.mi.com/global/product/xiaomi-watch-s42Maker product pagemi.com/global/product/xiaomi-watch-s4Read 15 October 2026

Spec sheet

www.garmin.com/en-NZ/p/pn/010-02985-001Maker product pagegarmin.com/en-NZ/p/pn/010-02985-00Read 5 October 2026

www.mi.com/global/product/xiaomi-watch-s4/specs1Maker product pagemi.com/global/product/xiaomi-watch-s4/specsRead 15 October 2026Global specs page. Base case and strap describe the Black version.

Manual

www8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdf3Owner's manualwww8.garmin.com/manuals/webhelp/GUID-8C2C402F-55AC-431F-9CF2-1442B89CE149/EN-US/vivoactive_6_OM_EN-US.pdfRead 5 October 2026Original exact owner manual, 102 pages. Printed page numbers used. No sibling model document.

Not available

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year10Maker product pagegarmin.com/en-NZ/legal/consumer-limited-warrantyRead 7 October 2026Current NZ contractual non-aviation product warranty is one year from purchase. Complete text read in original public HTML var content data. Statutory rights remain separate. Original-country service and possible independent distributor terms are retained in the policy, not claimed identical for every market.

Not available

Both are also in the API. Back to all smartwatches.