Smartwatches / Compare

Fitbit Versa 4 vs Garmin Lily 2

A

Product A: Fitbit

Versa 4

89 of 150 known

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B

Product B: Garmin

Lily 2

62 of 150 known

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Every value links to where we found it.

Only differences

AFitbit Versa 4

BGarmin Lily 2

General

6 of 10 differ

Series

Versa3Press releaseblog.google/products-and-platforms/devices/fitbit/versa-4-sense-2Read 6 October 2026

Lily2Maker product pagegarmin.com/en-US/p/950277Read 23 October 2026Garmin names the family Lily.

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

FB523, FB523BKBK-US, FB523SRAG-US, FB523RGRW-US, FB523RGRD1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Regulatory and Safety Notices: Model FB523 for FCC, IC, EU, UK and the IP rating. Retail colour SKUs are not stored.16Retailer pageabt.com/Fitbit-Versa-4-Graphite-Aluminum-Black-Strap-Fitness-Smartwatch-24mm-FB523BKBKUS/p/182318.htmlRead 7 October 2026Retail colour SKU FB523BKBK-US. Regulatory assembly remains FB523.17Retailer pageabt.com/Fitbit-Versa-4-Platinum-Aluminum-Waterfall-Blue-Strap-Fitness-Smartwatch-24mm-FB523SRAGUS/p/182320.htmlRead 7 October 2026Retail colour SKU FB523SRAG-US. Regulatory assembly remains FB523.18Retailer pageabt.com/Fitbit-Versa-4-Copper-Rose-Aluminum-Pink-Sand-Strap-Fitness-Smartwatch-24mm-FB523RGRWUS/p/182319.htmlRead 7 October 2026Retail colour SKU FB523RGRW-US. Regulatory assembly remains FB523.19Retailer pagephotopoint.ee/en/sports-watches/3626308-fitbit-versa-4-smart-watch-nfc-gps-satellite-amoled-touchscreen-heart-rate-monitor-activityRead 7 October 2026Retail colour SKU FB523RGRD. Regulatory assembly remains FB523.

010-02839-00, 010-02839-01, 010-02839-701Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026US page lists 010-02839-00 and 010-02839-01 for Lily 2. UK, Ireland and France pages list 010-02839-70 for the Cream Gold with Coconut version, and 010-02839-01 for Lilac. Lily 2 Classic uses 010-02839-02, -03, -14, -15, -72 to -75 and is excluded.

GTIN / EAN

810073611450, 810073611474, 810073611481, 81003885874616Retailer pageabt.com/Fitbit-Versa-4-Graphite-Aluminum-Black-Strap-Fitness-Smartwatch-24mm-FB523BKBKUS/p/182318.htmlRead 7 October 2026Exact FB523BKBK-US Black / Graphite Aluminum listing identifies 810073611450. Regional identifiers are not exchanged.17Retailer pageabt.com/Fitbit-Versa-4-Platinum-Aluminum-Waterfall-Blue-Strap-Fitness-Smartwatch-24mm-FB523SRAGUS/p/182320.htmlRead 7 October 2026Exact FB523SRAG-US Waterfall Blue / Platinum Aluminum listing identifies 810073611474. Regional identifiers are not exchanged.18Retailer pageabt.com/Fitbit-Versa-4-Copper-Rose-Aluminum-Pink-Sand-Strap-Fitness-Smartwatch-24mm-FB523RGRWUS/p/182319.htmlRead 7 October 2026Exact FB523RGRW-US Pink Sand / Copper Rose Aluminum listing identifies 810073611481. Regional identifiers are not exchanged.19Retailer pagephotopoint.ee/en/sports-watches/3626308-fitbit-versa-4-smart-watch-nfc-gps-satellite-amoled-touchscreen-heart-rate-monitor-activityRead 7 October 2026Exact FB523RGRD Beet Juice / Copper Rose Aluminum listing identifies 810038858746. Regional identifiers are not exchanged.

Not available

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

24 August 20223Press releaseblog.google/products-and-platforms/devices/fitbit/versa-4-sense-2Read 6 October 2026Fitbit blog post dated Aug 24, 2022. Pre-orders started that day with worldwide availability this fall.

8 January 20245Press releasegarmin.com/en-US/newsroom/press-release/wearables-health/garmin-brings-big-updates-to-its-small-stylish-lily-2-smartwatch-seriesRead 23 October 2026Garmin release dated 8 January 2024: announced the Lily 2 series. Available now.

Status

Available2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Google Store sells Versa 4 at 199.95 USD on the access date. That is a current price, not the launch price.

Available5Press releasegarmin.com/en-US/newsroom/press-release/wearables-health/garmin-brings-big-updates-to-its-small-stylish-lily-2-smartwatch-seriesRead 23 October 2026Garmin's US store still sells the SKU and shows it in stock on 2026-10-23.

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

Not available

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

Not available

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

$229.954Press releaseblog.google/products-and-platforms/devices/fitbit/fitbit-sense-2-versa-4Read 6 October 2026Versa 4 is now available for $229.95 (USD). The Aug 24, 2022 announcement gives the same price. No euro launch price was found in a maker source.

$249.995Press releasegarmin.com/en-US/newsroom/press-release/wearables-health/garmin-brings-big-updates-to-its-small-stylish-lily-2-smartwatch-seriesRead 23 October 2026Available now, Lily 2 has a suggested retail price of $249.99, while Lily 2 Classic starts at $279.99. US dollars, excluding sales tax.

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

€279.997Spec databaseinside-digital.de/smartwatches/garmin-lily-2Read 23 October 2026inside-digital Germany: UVP 279,99 EUR, Marktstart January 2024. A German recommended retail price including VAT. The Garmin Ireland and France stores still sell the silicone Lily 2 at 279.99 EUR. The German store sold it at 239.99 EUR on 2026-10-23, which is a later price and is not used. The page's weight of 21.4 g is the Classic leather figure and is not used.

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

US, GB, DE, EE2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026US, GB and DE maker stores offer the model. EE is a documented archived Beet retail listing, not a current-stock assertion.10Maker product pagestore.google.com/gb/product/fitbit_versa_4_specsRead 7 October 2026GB store offers Versa 4 at GBP 179.99 with Buy and all four colours. Current price is not a launch price.11Maker product pagestore.google.com/de/product/fitbit_versa_4_specsRead 7 October 2026DE store offers Versa 4 at EUR 199.95 with Kaufen and all four colours. Current price is not a launch price.19Retailer pagephotopoint.ee/en/sports-watches/3626308-fitbit-versa-4-smart-watch-nfc-gps-satellite-amoled-touchscreen-heart-rate-monitor-activityRead 7 October 2026Exact Beet FB523RGRD SKU was listed by Estonian retailer with Estonia delivery. Listing is now archived. This documents historical market scope rather than current stock.

Not available

ColoursiThe maker's own colour names

Black / Graphite Aluminum, Waterfall Blue / Platinum Aluminum, Pink Sand / Copper Rose Aluminum, Beet Juice / Copper Rose Aluminum2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

Cream Gold with Coconut Silicone Band, Metallic Lilac with Lilac Silicone Band1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026US page options: Cream Gold with Coconut Silicone Band and Metallic Lilac with Lilac Silicone Band.

Segment

Smartwatch2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Page title: Fitbit Versa 4 Smartwatch. The Aug 24, 2022 Fitbit blog calls it a fitness smartwatch.

Smartwatch2Maker product pagegarmin.com/en-US/p/950277Read 23 October 2026Garmin sells it as a stylish smartwatch for women.

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

Not available

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.

Not available

35mm6Press releasegarmin-deutschland-gmbh-ch.mynewsdesk.com/pressreleases/grosse-updates-fuer-die-kleinste-smartwatch-die-garmin-lily-2-serie-3295594Read 23 October 2026Garmin DACH release, 8 January 2024: 35 mm small fashion smartwatch with metal case and 14 mm narrow strap. Physical size is 35.4 mm.

Case shape

Rectangular7Reviewtechradar.com/reviews/fitbit-versa-4Read 6 October 2026Design and display: a friendly-looking square-faced watch. The Google Store gives equal 40.5 mm length and width.

Round7Spec databaseinside-digital.de/smartwatches/garmin-lily-2Read 23 October 2026Gehaeuseform: rund (round).8Reviewt3.com/reviews/garmin-lily-2-reviewRead 23 October 2026T3 gives 35.4 mm wide and tall, which fits a round case.

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.

Aluminium1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Materials: The housing and buckle on Versa 4 are made of aluminum.

Aluminium1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: Case material anodized aluminum, bezel material anodized aluminum.

Case material (as published)

Aluminum1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026

Anodized aluminum1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, as printed.

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

Plastic7Reviewtechradar.com/reviews/fitbit-versa-4Read 6 October 2026Design and display: the bezel is aluminum and the rear is plastic. Fitbit publishes no back material.

Not available

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

Height40.5Width40.5Thickness11.2mm(1.6 × 1.6 × 0.4 in)2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Dimensions and weight: Length 40.5 mm, Width 40.5 mm, Height 11.2 mm. Height is stored as thickness. The listed weight of 37.64 g does not say whether it includes the band, so neither weight field is filled.

Height35.4Width35.4Thickness10.1mm(1.4 × 1.4 × 0.4 in)1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Physical size: 35.4 x 35.4 x 10.1 mm. Garmin gives no note on the heart rate sensor bump.

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

Not available

Not available

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

Not available

24.4g(0.9 oz)1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Weight: 24.4 g. The figure is unqualified, but Garmin's Lily 2 Classic page prints different weights per band material (fabric 20.6 g, leather 21.4 g), so these figures include the band. This one is the Cream Gold with Coconut Silicone Band version. T3 repeats 24.4 g.8Reviewt3.com/reviews/garmin-lily-2-reviewRead 23 October 2026T3 prints the same 24.4 g with a 35.4 mm width and height and 10.1 mm thickness.

Durability

3 of 8 differ

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

5ATM1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Environmental conditions: Water resistant up to 50 meters. Fitbit publishes no ATM figure. 50 m equals the 5 ATM static pressure rating.12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Maker comparison explicitly publishes 5 ATM for Versa 4. The existing value is now directly maker-supported, without deriving pressure from metres.

5ATM1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Water rating: Swim, 5 ATM.

Water resistance standard

IEC 605291Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Manual printed page 74 explicitly rates FB523 IPX8 under IEC 60529 up to 50 metres. IEC 60529 applies to water ingress, not an inferred ISO pressure or diving test. Maker comparison independently publishes 5 ATM.

Not available

Dust and water rating

IP6X, IPX81Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026IP Rating section: IPX8 under IEC 60529 up to a depth of 50 meters, and IP6X dust-tight. Stored as the two published codes.

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-10Max45°C1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Environmental conditions table: operating temperature 14 to 113 F (-10 to 45 C). Non-operating and charging (0 to 35 C) ranges excluded. The Google Store specs page prints -14 to 113 F, which conflicts. The manual table, which states both units, is used.

Min-20Max60°C4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Specifications, page 35: operating temperature range -20 to 60 C. Charging range 0 to 45 C.

Display

5 of 14 differ

Display type

OLED2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

LCD1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Display type: Liquid Crystal. Color display: no, 16 level grayscale.

Display type (as published)

AMOLED2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Display: AMOLED display, Corning Gorilla Glass 3.

Liquid crystal1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Display type Liquid Crystal. The display is 16-level grayscale behind a patterned lens.

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

1.58in(4 cm)6Reviewpcmag.com/reviews/fitbit-versa-4Read 6 October 2026Both feature a 1.58-inch AMOLED display (Versa 4 and Sense 2). Fitbit publishes no diagonal. Android Central, Trusted Reviews and Stuff state the same 1.58 inches.

Not available

Resolution

336 × 336px6Reviewpcmag.com/reviews/fitbit-versa-4Read 6 October 2026The 336-by-336-pixel display. TechRadar and Android Central state 336 x 336 as well. No pixel density is stored because none is published.7Reviewtechradar.com/reviews/fitbit-versa-4Read 6 October 2026The screen is a 336 x 336 pixel OLED just like the Versa 3's.

240 × 201px1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Display resolution: 240 x 201 pixels. Display size 1.00 x 0.84 in (25.4 x 21.3 mm), so 240 is the width and 201 the height. No diagonal is published and none is stored.

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

Not available

Not available

Display area

Not available

Not available

Touchscreen

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Navigate Versa 4: Versa 4 has a color AMOLED touchscreen display and 1 button.

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab lists Touchscreen under What You'll Love.

Max refresh rateiHighest published display refresh rate in active operation.

Not available

Not available

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

Not available

Minimum brightness

Not available

Not available

Always-on display

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Adjust always-on display section.

No4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Waking the Watch: the screen turns off when not in use, and wrist gestures or a double-tap wake it.

Display cover

Gorilla Glass2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

Gorilla Glass1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Lens material: Corning Gorilla Glass 3.

Display cover (as published)

Corning Gorilla Glass 32Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

Corning Gorilla Glass 31Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Lens material, as printed.

Platform

5 of 15 differ

Platform

Proprietary3Press releaseblog.google/products-and-platforms/devices/fitbit/versa-4-sense-2Read 6 October 2026

Proprietary1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Garmin's own watch software, run through the Garmin Connect app. The spec tab names no third-party OS such as Wear OS.

OS at launch

Fitbit OS3Press releaseblog.google/products-and-platforms/devices/fitbit/versa-4-sense-2Read 6 October 2026Powered by the new Fitbit OS. No version number is published.

Not available

Software

Not available

Not available

Latest OS

Fitbit OS, firmware 220.3113Maker product pagesupport.google.com/googlehealth/answer/14236725Read 7 October 2026Latest maker-listed Versa 4 device firmware on access date. No unreported Fitbit OS major version is assigned. Updates are phased.

Not available

Works with

iOS, Android2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

iOS, Android1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Smartphone compatibility: iPhone, Android. The manual says the watch works with phones that use Bluetooth technology and pairs through the Garmin Connect app.

Phone requirement

Google Health app on a compatible device running Apple iOS 16.4 or higher or Android OS 11.0 or higher2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Requirements section, current on the access date. The 2022 launch requirement may have been lower.

Not available

App store

No6Reviewpcmag.com/reviews/fitbit-versa-4Read 6 October 2026The Versa 4 does not support third-party app downloads, with the exception of watch faces.

Not available

Voice assistants

Amazon Alexa1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Voice Assistant: Amazon Alexa Built-in. Needs the phone app running in the background. Not available in all countries.

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

None of 2 known

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.

Not available

Not available

Health sensors

5 of 8 differ

Heart rate sensor

Multi-path optical heart rate sensor1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Sensors and Components: Multi-path optical heart rate tracker. Google Store spells it Multi-path optical heart rate sensor.

Garmin Elevate Gen 41Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab lists the Garmin Elevate wrist heart rate monitor. The Garmin DACH release names the 4th generation sensor.6Press releasegarmin-deutschland-gmbh-ch.mynewsdesk.com/pressreleases/grosse-updates-fuer-die-kleinste-smartwatch-die-garmin-lily-2-serie-3295594Read 23 October 2026The release says the integrated heart rate sensor is of the 4th generation, so Garmin Elevate Gen 4.

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

No4Press releaseblog.google/products-and-platforms/devices/fitbit/fitbit-sense-2-versa-4Read 6 October 2026The ECG app is named for Sense 2 only, while Irregular Heart Rhythm Notifications are on both watches. Versa 4 has no electrical heart sensor in its sensor list.6Reviewpcmag.com/reviews/fitbit-versa-4Read 6 October 2026The Sense 2 adds an electrocardiogram (ECG) sensor.

No1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026The spec tab lists Garmin Elevate wrist heart rate, Pulse Ox, accelerometer and ambient light sensor and no ECG.

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

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Sensors and Components: red and infrared sensors for oxygen saturation (SpO2) monitoring. Not available in all countries and not for medical use.

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: Pulse Ox blood oxygen saturation monitor, spot-check and optionally in sleep. Not available in all countries.

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

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Track your sleep and Advanced health metrics: skin temperature variation from personal baseline. It reports variation only, not an absolute temperature.2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Sensors and components: Device temperature sensor (skin temperature variation available in the Google Health app). Variation only, not in all markets.

Not available

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

None14Spec databasegadgetsandwearables.com/technical-specs/fitbit-versa-4Read 7 October 2026Explicit absence of blood-pressure feature. Maker comparison also lacks blood-pressure trends.

Not available

Body composition sensor

Not available

Not available

Skin conductance (EDA)

No3Press releaseblog.google/products-and-platforms/devices/fitbit/versa-4-sense-2Read 6 October 2026The continuous EDA (cEDA) Body Response sensor is described for Sense 2 only. Versa 4 has no EDA sensor in its own sensor list.6Reviewpcmag.com/reviews/fitbit-versa-4Read 6 October 2026The Sense 2 adds a cEDA sensor and an ECG sensor that the Versa 4 lacks.

Not available

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

Irregular Heart Rhythm Notifications: FDA clearance, Irregular Heart Rhythm Notifications: EU clearance4Press releaseblog.google/products-and-platforms/devices/fitbit/fitbit-sense-2-versa-4Read 6 October 2026Both of these tools have FDA and EU clearance: the Sense 2 ECG app and the Irregular Heart Rhythm Notifications on both watches. Select countries only, not for people under 22 or with known AFib.

Not available

Motion and environment sensors

3 of 9 differ

Accelerometer

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Sensors.

Accelerometer range

Not available

Not available

Gyroscope

No12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Versa 4 column explicitly lacks the gyroscope.

Not available

Barometric altimeter

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Sensors and Components: Altimeter, which tracks altitude changes. Restart section names a small hole on the device for the altimeter, which is the pressure-sensor vent. Published only as Altimeter.

No1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026The same Sensors list names no barometric altimeter. The manual's settings page mentions compass calibration, which looks like shared text, so compass and gyroscope are left out.

Compass

No12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Versa 4 column explicitly lacks the compass.

Not available

Ambient light sensor

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Sensors.

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

3 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, Irregular rhythm notifications, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking, Readiness score, Cycle tracking1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Today app stats: heart rate, oxygen saturation, readiness, stress management score, menstrual health. Track your sleep: sleep stages. Receive heart-rate notifications: high and low heart rate. Advanced health metrics: heart-rate variability. Daily readiness and some detail need Fitbit Premium per the maker blog.3Press releaseblog.google/products-and-platforms/devices/fitbit/versa-4-sense-2Read 6 October 202624/7 heart rate monitoring, sleep tracking and Stress Management Score.4Press releaseblog.google/products-and-platforms/devices/fitbit/fitbit-sense-2-versa-4Read 6 October 2026Irregular Heart Rhythm Notifications on both watches.

Continuous heart rate, Heart rate alerts, Blood oxygen app, Sleep tracking, Sleep stages, Stress tracking, Cycle tracking1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: constant heart rate every second, abnormal heart rate alerts high and low, Pulse Ox, advanced sleep, all-day stress, Women's health. Pulse Ox needs supported countries. Not stored: HRV, Body Battery and respiration have no matching option.4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Sleep Tracking: sleep statistics include sleep stages. Menstrual Cycle Tracking and Heart Rate Variability and Stress Level sections.

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, Pool swim, Interval workouts, Turn-by-turn navigation1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Track your exercise automatically (SmartTrack, 15 minute minimum). Exercise settings list Pool Length and Interval. Google Maps app gives turn-by-turn directions and needs the paired phone nearby with the app running. View your cardio fitness score in the Fitbit app (stored as vo2_max, see the Google Health VO2 max help page).9Maker product pagesupport.google.com/googlehealth/answer/14237924Read 6 October 2026Learn about your VO2 max: tap VO2 max (formerly known as cardio fitness score). The Versa 4 manual names the cardio fitness score. VO2 max is estimated during outdoor runs with GPS.

Automatic workout detection, VO2 max, Strength rep counting, Pool swim1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: VO2 Max (run), automatic rep counting, Move IQ, Pool Swimming profile. Manual: Move IQ can automatically start timed walks and runs.

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

Not available

184Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Activities List, page 40, has 19 entries: Bike, Breathwork, Cardio, Dance Fitness, Elliptical, HIIT, Jump Rope, Meditation, Other, Pilates, Pool Swim, Row Indoor, Run, Stair Stepper, Strength, Treadmill, Walk, Walk Indoor and Yoga. The 18 stored excludes the generic Other entry and matches T3's 18 sports.8Reviewt3.com/reviews/garmin-lily-2-reviewRead 23 October 2026T3, 29 January 2024: the watch can track 18 sports, against 13 on the original Lily.

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

Not available

Not available

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

Not available

Not available

Safety

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

No12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Versa 4 column explicitly lacks general fall detection.

Not available

Car crash detection

No12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Versa 4 column explicitly lacks car crash detection.

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.

No12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Versa 4 column explicitly lacks manual emergency SOS.

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Safety and Tracking: Assistance. The manual says Assistance sends an automated text with name and GPS location to emergency contacts through the paired phone and does not contact emergency services.

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.

Not available

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Manual: LiveTrack lets friends and family follow activities in real time. The Assistance message carries a LiveTrack link.

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

No14Spec databasegadgetsandwearables.com/technical-specs/fitbit-versa-4Read 7 October 2026Explicit absence of dedicated LED flashlight. Display illumination is not that hardware feature.

Not available

Positioning

2 of 3 differ

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

GPS, GLONASS1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Sensors and Components: Built-in GPS receiver + GLONASS. Dynamic GPS can use the phone's GPS instead to save battery. No band or dual-frequency claim.

Not available

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

Not available

Not available

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

No14Spec databasegadgetsandwearables.com/technical-specs/fitbit-versa-4Read 7 October 2026Explicit no offline maps. Maker manual requires phone navigation and background app. Directions are not stored cartographic maps.

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 pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Connectivity: Bluetooth. No version is published.

Bluetooth version

5.01Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Wireless technology: Bluetooth 5.0 radio transceiver and NFC chip. Wi-Fi hardware is listed as deactivated and cannot be turned on, so no Wi-Fi standard is stored.

Not available

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

Not available

No4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Specifications list only 2.4 GHz Bluetooth for Lily 2. No Wi-Fi is named.

Wi-Fi standard

Not available

Not available

Wi-Fi bands

Not available

Not available

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

No8Reviewtomsguide.com/reviews/fitbit-versa-4Read 7 October 2026Fitbit's watches don't have cellular support. Only one radio configuration (FB523, Bluetooth and NFC) exists in the manual.

No4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Specifications list only Bluetooth for Lily 2. No cellular radio is named.

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.

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026

No4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Garmin's online Lily 2 manual, Specifications: Wireless frequency Lily 2: Bluetooth. Lily 2 Classic: Bluetooth, NFC. The PDF lists 13.56 MHz for the series, which belongs to the Classic.

Contactless payments

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026

No1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Overview: Garmin Pay is available only on Lily 2 Classic smartwatches.

Payment services

Google Wallet1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Contactless Payments: set up Google Wallet in the app. The manual also names the legacy Fitbit Pay app, which Google is phasing out. Card, bank and country limits apply.

Not available

Ultra-wideband

No12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026Versa 4 column explicitly lacks UWB radio.

Not available

Satellite

None12Maker product pagestore.google.com/gb/magazine/google_pixel_watch_compareRead 7 October 2026No satellite SOS. Published transmitters are Bluetooth/NFC. GPS reception is separate.

Not available

ANT+

Not available

No1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Connectivity: Bluetooth. The manual and Garmin's online specifications list Bluetooth only as the wireless technology of Lily 2.

Audio

2 of 4 differ

Speaker

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Sensors and Components lists Speaker and Microphone. The Google Store rates the speaker at 75 dB SPL at 10 cm. That is not an emergency siren.

Not available

Microphones

Not available

Not available

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

Phone only1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Answer or reject phone calls: on-wrist calls through the paired iPhone or Android phone, which must be nearby with the Fitbit app running. No cellular model exists.

None1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: text response or reject phone call with text (Android only). No call audio, speaker or microphone is listed.

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

No7Reviewtechradar.com/reviews/fitbit-versa-4Read 6 October 2026You can't store music on the watch. Tom's Guide also says you can't download music to the Versa 4.8Reviewtomsguide.com/reviews/fitbit-versa-4Read 7 October 2026You can't download music to the Versa 4 or install third-party apps.

No1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: controls smartphone music. No music storage is listed.

Controls

3 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.

11Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Navigate Versa 4: color AMOLED touchscreen display and 1 button.

08Reviewt3.com/reviews/garmin-lily-2-reviewRead 23 October 2026T3: the home button is a small circle at the bottom of the screen that you tap. The Lily 2 has no physical button.

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

Button1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Maker calls the single operating control Button. Strap-release latches are excluded.

Not available

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

None1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026The controls are the touchscreen and 1 button. There is no rotating crown.

None9Press articleandroidcentral.com/wearables/garmin-lily-2-active-launch-detailsRead 23 October 2026Lily 2 Active launch report: past Lily watches relied fully on touchscreen controls. The Lily 2 is touch only, with no crown or buttons.

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

Not available

Not available

Gestures

Turn your wrist, Briefly cover the watch face with your opposite hand, Triple-tap the screen1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Manual screen-wake setting documents selectable wrist-turn wake. Printed page 22 says briefly covering the face turns the screen off, except when always-on display is enabled. Printed page 20 says triple-tap zoom works after Magnify is enabled. These are interface gestures, not unsupported inertial sensor features.

Raise wrist to wake, Double-tap to wake4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Waking the Watch: rotate and lift your wrist toward your body, or double-tap the touchscreen.

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.

Not available

Not available

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.

AFitbit Versa 4

Mode	With solar	Hours (h)
Smartwatch	No	144
Always-on	No	72
GPS	No	12

Source5Maker product pagesupport.google.com/googlehealth/answer/14226518Read 6 October 2026Battery life table: Fitbit Versa 4* 6+ days, stored as 144 h as a minimum figure. Footnote *: always-on display and GPS need more frequent charging. If you turn on always-on display: Versa 4 up to 3 days (72 h). If you use built-in GPS continuously: Versa 4 up to 12 hours. The 2025 pre-production test footnote (**) belongs to Google Fitbit Air, not Versa 4.

BGarmin Lily 2

Mode	With solar	Hours (h)
Smartwatch	No	120

Source1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Battery life: up to 5 days (smartwatch mode). Garmin's online manual says it is a typical value tested under Garmin laboratory conditions. No GPS figure exists, since Lily 2 has no built-in GNSS.

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.

144h=CalculatedFrom Claimed battery life

120h=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.

72h=CalculatedFrom Claimed battery life

Not available

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.

12h=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.

Magnetic pins1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Charge your watch: the cable end attaches magnetically to the port on the back and its pins align with the port.

Clip pins1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Charging method: Garmin proprietary clip charger.

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

Not available

Garmin proprietary clip charger that aligns with the contacts on the back. The USB cable plugs into a Garmin approved AC adapter or a computer USB port. Charging temperature range 0 to 45 C.4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Charging the Watch: pinch the charging clip, align it with the contacts on the back, plug the USB cable into a power source. A Garmin approved AC adapter or a computer USB port works. Charging range 0 to 45 C.

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.

Yes4Press releaseblog.google/products-and-platforms/devices/fitbit/fitbit-sense-2-versa-4Read 6 October 2026Fast charging gets you a full day's worth of battery in just 12 minutes.

Not available

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

Charge time12 minUse time24 h1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Charge Versa 4 for 12 minutes for 24 hours of battery life.

Not available

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.

120min2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Battery and power: Charge time (0-100%): Two hours. The manual says charging fully takes about 1-2 hours.

Not available

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.

Not available

Not available

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.

60min8Reviewtomsguide.com/reviews/fitbit-versa-4Read 7 October 2026Reviewer observed depleted-to-full charging using the proprietary USB-A-ended charging arrangement. Standard 40.5 mm Copper Rose review unit. USB power adapter, ambient temperature and firmware are unstated. This is a measured result, separate from the maker two-hour claim. Partial-discharge runtime projections are not added.

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.

Not available

14mm4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Changing the Bands: the watch is compatible with 14 mm wide, standard, quick-release bands.

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

Yes1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Change the band: slide the flat latch button toward the band and pull. Attach by pressing until it clicks. No tools.

Yes1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: Quick Release bands.

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

Proprietary latch connector. Fitbit Sense, Sense 2 and Versa 3 bands are compatible.1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Change the band: Fitbit Sense, Fitbit Sense 2, and Fitbit Versa 3 bands are compatible with Versa 4. Turn over Versa 4 and find the band latches. Slide the flat button toward the band to release the latch. Proprietary connector, no lug width published.

14 mm wide standard quick-release bands4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Changing the Bands, page 34: 14 mm wide, standard, quick-release bands with a spring bar and quick-release pin.

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

Other1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Supplied classic band is elastomer. Other preserves that wording without guessing silicone, HNBR or fluoroelastomer.

Silicone1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab, Strap material: silicone.

Strap

Classic band2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Maker box lists Classic band in small and large sizes. Manual printed page 57 states flexible durable elastomer. band_material=other preserves that published material without guessing a specific polymer.

Coconut Silicone Band1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026US page: Cream Gold with Coconut Silicone Band is the base SKU 010-02839-00.

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

AFitbit Versa 4

Size	Wrist (min) (mm)	Wrist (max) (mm)
Small	140	180
Large	180	220

Source1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Band size table: Small 140-180 mm, Large 180-220 mm wrist circumference. The Google Store specs page prints Small 5.1-7 in and Large 6.5-8.6 in. The manual table is used.

BGarmin Lily 2

Size	Wrist (min) (mm)	Wrist (max) (mm)
Silicone band	110	175

Source1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Spec tab: fits wrists with a circumference of 110-175 mm. One range for the watch and not specific to one band.

Regulatory

1 of 3 differ

FCC ID

XRAFB5231Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026USA FCC statement: Model FB523, FCC ID XRAFB523. IC 8542A-FB523.

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.

Not available

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.

Not available

Not available

Other certifications

RED (2014/53/EU), UK Radio Equipment Regulations 2017, IEC 62368-1:20181Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Manual printed page 62 declares FB523 compliance with RED 2014/53/EU. Printed page 72 declares UK Radio Equipment Regulations 2017. Printed page 74 lists testing to IEC 62368-1:2018 safety certification. These are model declarations and safety tests, not medical, military or diving certifications.

Not available

In the box

1 of 2 differ

In the box

Fitbit Versa 4, Classic band (small & large), Charging cable2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

Lily 2, USB-C charging cable, Documentation1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026In the box tab: Lily 2, USB-C Charging cable, Documentation.

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

No2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026What's in the box lists only Fitbit Versa 4, Classic band (small & large) and Charging cable. No power adapter.

No1Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026The in the box list has no power adapter.

Links

Not compared

Product page

store.google.com/us/product/fitbit_versa_4_specs2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026

www.garmin.com/en-US/p/9502772Maker product pagegarmin.com/en-US/p/950277Read 23 October 2026Garmin US product page for the Lily 2.

Spec sheet

store.google.com/us/product/fitbit_versa_4_specs2Maker product pagestore.google.com/us/product/fitbit_versa_4_specsRead 7 October 2026Online maker specification sheet for regulatory model FB523.

www.garmin.com/en-US/p/950277/pn/010-02839-001Maker product pagegarmin.com/en-US/p/950277/pn/010-02839-00Read 23 October 2026Garmin US page for Lily 2 part number 010-02839-00. Garmin lists Lily 2, Lily 2 Classic and Lily 2 Active on separate product pages. This page covers the silicone-band Lily 2 only.

Manual

storage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsK1Owner's manualstorage.googleapis.com/support-kms-prod/aMr9HIIq7XWrbNCLHQyr9sA3nP2Y6JUWITsKRead 7 October 2026Versa 4 User Manual Version 2.1, linked from the Fitbit user manuals help page (support.google.com/googlehealth/answer/14253977).

www8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdf4Owner's manualwww8.garmin.com/manuals/webhelp/GUID-C2B794A7-F2FB-456B-B090-69C0111C43CB/EN-US/Lily_2_OM_EN-US.pdfRead 23 October 2026Lily 2 Owner's Manual PDF. It covers Lily 2 and Lily 2 Classic, and its Garmin Pay and NFC text applies only to the Classic.

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

1 of 1 differ

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.

1year15Maker product pagesupport.google.com/product-documentation/answer/14815834Read 7 October 2026Manufacturer contractual warranty for original new US Fitbit Versa 4 / FB523 retail units purchased before July 11, 2023: one year. Exact US Abt FB523BKBK-US also states one-year limited parts/labour warranty. The original maker contract separately gives two years for an EEA resident purchasing in the EEA, including the retained Estonian market. This scalar applies only to the stated US source-market contract, not all variants. Later purchases use the separate Google Hardware Warranty Center terms.16Retailer pageabt.com/Fitbit-Versa-4-Graphite-Aluminum-Black-Strap-Fitness-Smartwatch-24mm-FB523BKBKUS/p/182318.htmlRead 7 October 2026Exact new US FB523BKBK-US listing states one-year limited parts and labour warranty. This source-market claim is distinct from the maker two-year EEA contract and does not set the Estonian variant warranty.

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