Smartwatches / Compare

OnePlus Watch 3 vs Samsung Galaxy Watch Ultra

A

Product A: OnePlus

Watch 3

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B

Product B: Samsung

Galaxy Watch Ultra

87 of 150 known

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Every value links to where we found it.

Only differences

AOnePlus Watch 3

BSamsung Galaxy Watch Ultra

General

7 of 10 differ

Series

Watch1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Galaxy Watch1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

OPWWE2511Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Original large OnePlus Watch 3 OPWWE251. The separately marketed 43 mm OPWE242 is excluded.7Maker product pageoneplus.com/uk/pstisocRead 8 October 2026Public list explicitly distinguishes OnePlus Watch3 OPWWE251 from OnePlus Watch3 43 mm OPWE242. PSTI security support is not an OS-update-years promise.

SM-L705UDAAXAA, SM-L705UZWAXAA, SM-L705UZTAXAA4Maker spec sheet (PDF)image-us.samsung.com/SamsungUS/samsungbusiness/solutions/industries/government/msrp-price-sheets/08142024/Samsung_Wearables_MSRP_Price_File_July_2024.pdfRead 10 October 2026July 2024 price file: SM-L705UDAAXAA Titanium Gray, SM-L705UZWAXAA Titanium White, SM-L705UZTAXAA Titanium Silver. Galaxy Watch Ultra LTE, New, $649.99.

GTIN / EAN

Not available

887276873039, 887276866468, 8872768664754Maker spec sheet (PDF)image-us.samsung.com/SamsungUS/samsungbusiness/solutions/industries/government/msrp-price-sheets/08142024/Samsung_Wearables_MSRP_Price_File_July_2024.pdfRead 10 October 2026UPC 887276873039 (Gray), 887276866468 (White), 887276866475 (Silver).

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

18 February 20253Press releaseoneplus.com/us/press/press-release/oneplus-unveils-its-latest-flagship-smartwatch-oneplus-watch-3Read 8 October 2026

10 July 20241Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Announcement of 10 July 2024. Pre-orders started 10 July and general US availability 24 July 2024.

Status

Not available

Not available

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.

OnePlus Watch 411Reviewnotebookcheck.net/OnePlus-Watch-4-New-Wear-OS-smartwatch-detailed-before-global-release.1275026.0.htmlRead 23 October 2026Notebookcheck's preview says the OnePlus Watch 4 is replacing the OnePlus Watch 3.

Samsung Galaxy Watch Ultra28Reviewgsmarena.com/the_galaxy_watch_ultra2_is_slimmer_and_has_a_huge_battery_watch9_arrives_in_40mm_and_44mm_sizes-news-73831.phpRead 23 October 2026GSMArena says the Galaxy Watch Ultra2 is 12% slimmer than its predecessor, at 10.7 mm against 12.1 mm.9Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 23 October 2026Samsung's launch release gives the Galaxy Watch Ultra2 a battery 35% larger than the previous Ultra model.

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

Not available

$649.991Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Galaxy Watch Ultra retails for $649.99 (LTE, 47 mm).4Maker spec sheet (PDF)image-us.samsung.com/SamsungUS/samsungbusiness/solutions/industries/government/msrp-price-sheets/08142024/Samsung_Wearables_MSRP_Price_File_July_2024.pdfRead 10 October 2026MSRP $649.99 on all three rows.

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

€6995Press releasenews.samsung.com/de/samsung-erweitert-wearables-portfolio-intelligentes-gesundheitstracking-fur-alleRead 10 October 2026German release: MSRP of the Galaxy Watch Ultra (LTE) is 699 EUR. Consumer price with VAT.

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

GB1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026UK reference page, including its ECG-capable sensor table. North American ECG app eligibility is not inherited.

Not available

ColoursiThe maker's own colour names

Obsidian Titanium1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Obsidian Titanium reference. The titanium wording describes the bezel, not an all-titanium housing.

Titanium Gray, Titanium White, Titanium Silver1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Text: 47mm in Titanium Gray, Titanium White and Titanium Silver. The 2025 edition adds Titanium Blue and is excluded.4Maker spec sheet (PDF)image-us.samsung.com/SamsungUS/samsungbusiness/solutions/industries/government/msrp-price-sheets/08142024/Samsung_Wearables_MSRP_Price_File_July_2024.pdfRead 10 October 2026Row names give the colours.

Segment

Smartwatch1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Not available

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

8 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

47mm1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Only one size: 47mm. LTE only (footnote 47).

Case shape

Round1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Other1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Maker describes a cushion design with a round display.

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.

Stainless steel1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Mixed materials1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 38: Grade 4 titanium is partly applied to the front and back cover areas of the frame. The rest of the frame is a mix of plastic and Grade 2 titanium.

Case material (as published)

Black stainless steel case with black titanium bezel1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Grade 4 titanium on the front and back cover areas, plastic and Grade 2 titanium for the rest of the frame1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

Plastic5Spec databasephonearena.com/phones/OnePlus-Watch-3_id12649Read 8 October 2026Design > Materials explicitly distinguishes Plastic back and Stainless-steel frame.

Not available

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

Thickness11.75mm1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Maker publishes 46.6 mm excluding lugs x 47.6 mm x 11.75 mm excluding the sensor area. Height/width axes are not labelled, and secondary lists reverse their order. Only unambiguous thickness is stored.

Height47.4Width47.1Thickness12.1mm(1.9 × 1.9 × 0.5 in)1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: 47.1 x 47.4 x 12.1 mm, footnote 50: measured without health sensors. Order is read as width x height x thickness. GSMArena prints 47.4 x 47.1 x 12.1 mm.

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

49.7g(1.8 oz)1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Size and Weight: 49.7 g excluding wrist strap.

60.5g(2.1 oz)1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: 60.5 g, footnote 51: measured without band.

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

81g(2.9 oz)1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Size and Weight: 81 g including the supplied wrist strap.

Not available

Durability

4 of 8 differ

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

5ATM1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

10ATM1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: 10ATM. Footnote 57: ISO 22810, 100 m for 10 minutes, tested in 5% salt water and 4 ppm chlorine water. Not suitable for diving.

Water resistance standard

ISO 22810:20103Press releaseoneplus.com/us/press/press-release/oneplus-unveils-its-latest-flagship-smartwatch-oneplus-watch-3Read 8 October 20265 ATM under ISO 22810:2010. Not suitable for diving/hot showers/sauna. No dive depth is inferred.

ISO 228101Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 57 names ISO 22810.

Dust and water rating

IP681Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

IP681Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 57: IP68, 1.5 m fresh water for 30 minutes and dust test.

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.

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 56: MIL-STD-810H certification, a test that repeats -20 C for 1 hour and 50 C for 1 hour for 6 hours.

MIL-STD-810 tests

Low pressure (altitude), High temperature, Low temperature, Temperature shock, Solar radiation, Rain, Humidity and heat, Salt spray, Sand and dust, Immersion, Vibration, Impact, Temperature-humidity-altitude, Fluid contamination, Acidic atmosphere, Ice accumulation and freezing rain1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Maker named MIL-STD-810H test list. The 70 C/-40 C durability tests are not operating-temperature limits.

Temperature cycling: -20 C for 1 hour and 50 C for 1 hour, repeated for 6 hours1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 56 temperature cycle only.

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

Min0Max35°C2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026NFC Description, printed page 4, instructs use within 0-35 C. Military thermal test extremes and VOOC charging battery-temperature limits are separate.

Min-20Max55°C1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 39: withstands -20 C to 55 C while worn on the wrist, based on Samsung internal lab tests.2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Operating temperature -4 F to 131 F, which matches -20 C to 55 C.

Display

5 of 14 differ

Display type

LTPO OLED1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

OLED1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Display type (as published)

LTPO AMOLED1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Super AMOLED1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

1.5in(3.8 cm)1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

1.5in(3.8 cm)1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: 1.5-inch (37.3 mm).

Resolution

466 × 466px1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

480 × 480px1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

Yes4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Device layout labels the touchscreen.

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.

2,200nits1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Published peak up to 2200 nits, not a measured full-screen value.

3,000nits1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Peak brightness of 3,000 nits. Conditions are not published.

Minimum brightness

Not available

Not available

Always-on display

Yes4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Display cover

Sapphire1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Sapphire1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Display cover (as published)

Sapphire crystal1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Sapphire Crystal1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: Sapphire Crystal.

Platform

10 of 15 differ

Platform

Wear OS1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Wear OS1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

OS at launch

Wear OS 5 and RTOS3Press releaseoneplus.com/us/press/press-release/oneplus-unveils-its-latest-flagship-smartwatch-oneplus-watch-3Read 8 October 2026

Wear OS 51Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Software

Not available

Not available

Latest OS

Not available

Not available

Works with

Android2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026

Android1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Phone requirement

Android 9.0 or later with Google Mobile Services 23.45.23 or later and OHealth. iOS and Android Go are not supported.2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026

Android 11 or later with more than 1.5 GB of memory. Excludes Android Go edition and phones without Google Play Store.1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 54 and table: Android 11 or later, more than 1.5 GB memory, excluding Go edition and phones without Play Store.

App store

Yes6Maker product pageoneplus.com/global/oneplus-watch-3Read 8 October 2026Google Play store supports downloading applications. Wear OS applications are restricted in RTOS Power Saver mode.

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Text: access to popular apps including third-party apps from the wrist on Wear OS 5.

Voice assistants

Google Assistant2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Buttons and Touch, printed page 2, names Google Assistant as the default crown-hold action. Smart mode, Google account, supported region/language and internet through phone/Wi-Fi are required. No RTOS Power Saver or unverified Gemini availability is promised.10Reviewthe-gadgeteer.com/2025/03/16/oneplus-watch-3-review-a-solid-big-smartwatch-with-battery-for-literal-daysRead 8 October 2026Exact original model review actually uses Google Assistant by crown hold. Its erroneous iOS OHealth claim and partial daily charging observations are not imported. Current maker manual and Google support retain region/account/connectivity conditions.

Bixby, Google Gemini2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Compare table marks Google Gemini available. Bixby is in the launch manual.3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Bixby voice service on the watch.

Chipset

Qualcomm Snapdragon W51Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Main processor Snapdragon W5. Its process is distinct from the BES2800 MCU process.

Samsung Exynos W10001Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: Exynos W1000 (5 core, 3nm).

Process

4nm5Spec databasephonearena.com/phones/OnePlus-Watch-3_id12649Read 8 October 2026Hardware > Snapdragon W5 Gen1 (4 nm), main application SoC. The maker 6 nm figure describes the separate BES2800 MCU and is not substituted here.

3nm1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

CPU cores

45Spec databasephonearena.com/phones/OnePlus-Watch-3_id12649Read 8 October 2026

51Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

CPU configuration

AOnePlus Watch 3

Count	Core	Max clock (GHz)
4	Cortex-A53	1.7

Source5Spec databasephonearena.com/phones/OnePlus-Watch-3_id12649Read 8 October 2026Hardware explicitly gives quad-core 1.7 GHz Cortex-A53.

BSamsung Galaxy Watch Ultra

Count	Core	Max clock (GHz)
1	Cortex-A78	1.6
4	Cortex-A55	1.5

Source7Maker product pagesemiconductor.samsung.com/processor/wearable-processor/exynos-w1000Read 10 October 2026Chip page metadata: Cortex-A78 1.6GHz single-core and Cortex-A55 1.5GHz quad-core. These are chip figures. Samsung does not publish separate watch clocks for the Ultra.

Max CPU clock

1.7GHz=CalculatedFrom CPU configuration

1.6GHz=CalculatedFrom CPU configuration

GPU

Adreno 7025Spec databasephonearena.com/phones/OnePlus-Watch-3_id12649Read 8 October 2026

Not available

Low-power coprocessor

BES2800BP1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Chip table explicitly names MCU BES2800BP. RTOS handles background/low-power tasks.

Not available

Memory

0 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.

2GB4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026Original large-model review spec table gives 2 GB RAM and 32 GB storage.

2GB1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: 2GB memory + 32GB storage. The later 2025 edition has 64 GB and is excluded.

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.

32GB1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

32GB1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Health sensors

3 of 8 differ

Heart rate sensor

8-channel optical heart rate sensor2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Performance Parameters, printed page 6: 8-channel optical heart-rate sensor, with a separate 16-channel optical pulse-oximeter sensor.

Samsung BioActive Sensor1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: Samsung BioActive Sensor (optical bio-signal, electrical heart signal, bioelectrical impedance).

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

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026UK table explicitly lists ECG hardware and ECG Analyzer. App availability depends on country, phone, age and current software. This is not a claim of worldwide ECG-app availability.

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table lists an electrical heart signal sensor. The US page lists ECG for Galaxy Watch Ultra. ECG is only available in select markets.2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026

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

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Samsung Health Blood oxygen: measure blood oxygen levels. Wellness measurement.

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

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table lists a temperature sensor. Maker does not say where it measures.

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

Not available

Not available

Body composition sensor

Not available

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

FDA De Novo authorization for Sleep Apnea feature (US)1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Press text for Watch7: De Novo FDA-authorized Sleep Apnea feature. Ultra builds on the Watch7 health features and its US page lists Sleep Apnea. ECG and IHRN clearance wording is not stated in this release.2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Page lists Sleep Apnea for Galaxy Watch Ultra.

Motion and environment sensors

0 of 9 differ

Accelerometer

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Barometric altimeter

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Compass

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table lists a geomagnetic sensor. The manual has a Compass app.

Ambient light sensor

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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, ECG app, Blood oxygen app, Heart rate variability, Sleep tracking, Stress tracking1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Current maker health list: heart rate and high/low alerts, SpO2 spot/all-day checks, sleep quality/snoring-risk assessment, Mind and Body with HRV/stress and ECG Analyzer in eligible regions. Snoring-risk assessment is not sleep-apnea clearance.6Maker product pageoneplus.com/global/oneplus-watch-3Read 8 October 2026Published continuous heart rate and HRV/stress functions. Current UK ECG is independently specified. US ECG app availability is excluded.

Blood oxygen app, Sleep tracking, Stress tracking, Readiness score, Cycle tracking, Body composition, ECG app, Irregular rhythm notifications, Sleep apnea notifications2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Health list: Energy Score, Sleep Apnea, Bedtime Guidance, High Stress Alert, Running Coach, Personalized Heart Rate Zone, Functional Threshold Power, AGEs Index, Vascular Load, ECG, Irregular Heart Rhythm Notification, Body Composition, Cycle Tracking. Blood pressure is not stored. Regional and phone requirements apply.3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Sleep and blood oxygen options in Samsung Health. Sleep tracking is listed.

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.

VO2 max, Running dynamics, Running power, Turn-by-turn navigation1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Professional Running explicitly names cadence, stride length, ground contact time/balance, vertical movement and running power. VO2 max and Google Maps turn directions are published on the linked product page. An over 100 claim is not an exact profile count.6Maker product pageoneplus.com/global/oneplus-watch-3Read 8 October 2026Running VO2max and ground contact data plus Google Maps turn directions. No direct running/sport profile count is inferred from 100+.

Pool swim, Open water swim, Trackback1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Text: tracking for swimming in the ocean and a Multi-sports tile. Workout results include swim analysis with SWOLF score (US page). Track Back is on the US page.2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Track Back with detailed guidance including altitude. Multisport. Workout results with swim analysis (SWOLF).

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.

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

Power meter1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 40: a power meter connects to the Galaxy phone to measure FTP. Power meter is sold separately.

Safety

2 of 6 differ

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

Not available

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Safety and emergency: hard fall detection automatically calls an emergency contact. Needs a configured contact and phone or LTE connection.

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.

Not available

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Safety and emergency: Emergency SOS sends an SOS message to emergency contacts. The Quick button can also start a siren.

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

Not available

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

Not available

Not available

Positioning

1 of 3 differ

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

GPS (L1 + L5), BeiDou, Galileo, GLONASS, QZSS1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Connectivity names GPS dual-band L1+L5 and BeiDou/Galileo/GLONASS/QZSS. Signal bands for the other constellations are not invented.

GPS (L1+L5), GLONASS, BeiDou, Galileo1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: GPS (L1+L5), Glonass, Beidou, Galileo.

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

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Dual-Frequency GPS using L1 and L5 frequency bands.

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

Not available

Not available

Connectivity

7 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

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Bluetooth version

5.21Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

5.31Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Wi-Fi standard

Wi-Fi 45Spec databasephonearena.com/phones/OnePlus-Watch-3_id12649Read 8 October 2026Connectivity explicitly lists 802.11 a/b/g/n. No Wi-Fi 5 inference from the 5 GHz band.

Not available

Wi-Fi bands

2.4 GHz, 5 GHz1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

2.4 GHz, 5 GHz1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

No4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026Reviewer explicitly states no LTE option for either original colour. Not derived solely from omitted radio entries.

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 47: LTE only available in the LTE model. The Ultra is sold only as LTE.

Network

Not available

LTE1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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.

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

Contactless payments

Yes1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Samsung Wallet lets you make payments with the watch.

Payment services

Google Wallet1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Google Wallet country, bank/card and account requirements apply.

Samsung Wallet3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Samsung Wallet.

Ultra-wideband

Not available

Not available

Satellite

Not available

Not available

ANT+

Not available

Not available

Audio

2 of 4 differ

Speaker

Yes4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Water lock mode ejects water from the speaker.

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 only4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026Bluetooth calling through a paired phone. The exact original model has no cellular edition.

Cellular or phone3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026The Watch7 and Watch Ultra are 4G LTE-enabled. Make and receive calls even without the phone.

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

Not available

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Music app: import music saved on the smartphone to the watch.

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.

12Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Product Overview/Buttons and Touch, printed pages 1-2: Crown plus Lower button. The clickable rotating crown is not counted as an ordinary button.

33Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Galaxy Watch Ultra device layout: touchscreen, Home button, Quick button, Back button.

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

Lower button2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Exact manual operating-control name, excluding Crown and strap-release controls.

Home button, Quick button, Back button3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Customize buttons: Home, Quick (Watch Ultra only) and Back.

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

Rotating haptic4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026Reviewer describes physical rotation with Pixel-like scroll haptic feedback. Lower push button remains separate.

None3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Device layout shows no crown.

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

Not available

Not available

Gestures

Not available

Not available

Battery and charging

7 of 13 differ

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

631mAh2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Performance Parameters gives 648 mAh typical and 631 mAh rated. The stored figure is rated, matching the maker launch release. Typical capacity is not substituted without a separate field.

590mAh1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: 590 mAh typical. Footnote 52: typical value tested under IEC 61960.

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.

AOnePlus Watch 3

Mode	With solar	Hours (h)
Smartwatch	No	120
Heavy use	No	72
Low power	No	384

Source1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Up to claims: Smart mode 120 h uses official face, AOD off and Dual-Engine architecture, daily 30 min GPS running/5 min calls/15 min Bluetooth-headphone Spotify/6.5 h sleep. Heavy Smart mode 72 h uses third-party face, Dual-Engine off and AOD on, daily 30 min running/30 min music/15 min Google Maps/5 min calls/6.5 h sleep. Low-power RTOS mode 384 h retains notifications, calls and sleep tracking but limits Wear OS apps. No AOD-only or continuous-GPS row is inferred from the heavy mixed workload.6Maker product pageoneplus.com/global/oneplus-watch-3Read 8 October 2026Up to claims: Smart mode 120 h uses official face, AOD off and Dual-Engine architecture, daily 30 min GPS running/5 min calls/15 min Bluetooth-headphone Spotify/6.5 h sleep. Heavy Smart mode 72 h uses third-party face, Dual-Engine off and AOD on, daily 30 min running/30 min music/15 min Google Maps/5 min calls/6.5 h sleep. Low-power RTOS mode 384 h retains notifications, calls and sleep tracking but limits Wear OS apps. No AOD-only or continuous-GPS row is inferred from the heavy mixed workload.

BSamsung Galaxy Watch Ultra

Mode	With solar	Hours (h)
Always-on	No	60
Low power	No	100

Source1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Text: up to 100 hours in Power Saving mode. Footnote 45: up to 60 hours without Power Saving mode, typical usage. The US page states the 60 hours with always-on display on. Exercise Power Saving 48 hours is not stored.2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Up to 60 hrs with AOD on and up to 100 hrs with Power Saving Mode on, 590 mAh. Current page of the 2025 edition with the same battery.

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.

120h=CalculatedFrom Claimed battery life

Not available

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.

Not available

60h=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.

Not available

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 pins2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Charging, printed page 3, fits metal watch charging connectors against charging-base contacts. Conductive pins, not an inferred Qi/inductive puck.9Press articleandroidcentral.com/accessories/oneplus-launches-a-little-cable-upgrade-you-didnt-know-your-charger-was-missingRead 8 October 2026Exact compatible OnePlus Watch 3 charging accessory explicitly uses an integrated magnetic pogo-pin connector. This corroborates the supplied-base metal-contact mechanism. Accessory power ratings are not transferred to watch maximum accepted power.

Proprietary wireless charger1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Table: Fast Charging (WPC-based wireless charging). WPC use does not establish Qi interoperability.

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

Not available

Samsung lists Fast Charging (WPC-based wireless charging). Samsung tested with the Galaxy Watch Magnetic Fast Charging USB-C Cable (EP-OR900) and a 25 W USB-C adapter (EP-TA800) sold separately. Adapter ratings do not establish the power the watch accepts.1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026Footnote 53 describes the charge test accessories and says the 25 W adapter is sold separately.

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.

Yes2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026VOOC flash charge is explicit. Uses supplied charging base/cable, battery temperature 20-40 C and a qualifying adapter rated 5 V/2 A or higher.

Yes1Press releasenews.samsung.com/us/samsung-galaxy-ring-watch7-watch-ultra-wearables-provide-intelligent-health-wellness-dataRead 10 October 2026

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

Charge time10 minUse time24 h3Press releaseoneplus.com/us/press/press-release/oneplus-unveils-its-latest-flagship-smartwatch-oneplus-watch-3Read 8 October 2026Maker claims a full day of Smart-mode use from 10-minute charge. Includes the published battery workload, not arbitrary screen/GPS-on time. Flash charging also requires the qualifying base, adapter and battery temperature from the manual.

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.

Not available

Not available

Measured

2 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.

96h4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026Original Obsidian Titanium review sample: reviewer regularly observed a full 4 days with AOD on, nightly sleep tracking and 1 hour tracked exercise/day. 96 h is exact conversion of the published 4 days. Firmware, exercise GNSS share and brightness are unstated. This is mixed-use observation, not standardized continuous GPS. Projected 6-7 day daytime/AOD-off claims and unspecified-start charging observations are omitted.

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.

AOnePlus Watch 3

Test	Hours (h)
Mixed use, always-on	96

Source4Reviewandroidcentral.com/wearables/oneplus-watch-3-reviewRead 8 October 2026Same 96 h AOD-on observational cycle as the scalar, original large Obsidian sample with nightly sleep and 1 h exercise/day. No 43 mm measurement is imported.

BSamsung Galaxy Watch Ultra

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.

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.

22mm1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Published standard 22 mm watchband compatibility describes conventional strap attachment, not a decorative proprietary connector width.6Maker product pageoneplus.com/global/oneplus-watch-3Read 8 October 2026Published standard 22 mm watchband compatibility describes conventional strap attachment, not a decorative proprietary connector width.

Not available

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

Yes2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Product Overview labels Strap Release and Attachment controls for the supplied conventional strap.10Reviewthe-gadgeteer.com/2025/03/16/oneplus-watch-3-review-a-solid-big-smartwatch-with-battery-for-literal-daysRead 8 October 2026Design and features identifies actual supplied strap quick-release buttons on the original large review sample. Not merely replacement-band compatibility.

Yes3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026Band instructions: press the end of the band into the lug (Galaxy Watch Ultra only).

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

Standard 22 mm watchbands1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Linked maker product page explicitly supports all standard 22 mm watchbands.6Maker product pageoneplus.com/global/oneplus-watch-3Read 8 October 2026Linked maker product page explicitly supports all standard 22 mm watchbands.

Dynamic Lug System for Galaxy Watch Ultra bands6Maker product pagesamsung.com/ae/support/mobile-devices/what-are-the-size-material-and-color-options-for-galaxy-watch7-and-galaxy-watch-ultraRead 10 October 2026Dynamic Lug System.

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

Not available

Hydrogenated nitrile butadiene rubber (HNBR)6Maker product pagesamsung.com/ae/support/mobile-devices/what-are-the-size-material-and-color-options-for-galaxy-watch7-and-galaxy-watch-ultraRead 10 October 2026Watch Ultra row: Band S/M/L (Marine Band, HNBR, Dynamic Lug System).

Strap

Not available

Marine Band6Maker product pagesamsung.com/ae/support/mobile-devices/what-are-the-size-material-and-color-options-for-galaxy-watch7-and-galaxy-watch-ultraRead 10 October 2026Marine Band is the band listed for the 47mm Ultra.

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

AOnePlus Watch 3

Wrist (min) (mm)	Wrist (max) (mm)
140	210

Source1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

BSamsung Galaxy Watch Ultra

Not available

Regulatory

1 of 3 differ

FCC ID

Not available

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.

0.312W/kg2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026English CE SAR section, printed page 5: limb 0.312 W/kg in direct contact with the watch back. Face 0.150 W/kg is excluded.

Not available

Other certifications

Not available

Not available

In the box

2 of 2 differ

In the box

Watch body, Charging base, Strap, Safety Guide, Quick Start Guide, USB-C charging cable1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Not available

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

No1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026Complete box list supplies charging base and cable but no mains/USB power adapter.

Not available

Links

Not compared

Product page

www.oneplus.com/uk/oneplus-watch-31Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

www.samsung.com/us/watches/galaxy-watch-ultra2Maker product pagesamsung.com/us/watches/galaxy-watch-ultraRead 10 October 2026Current US page, which sells the Galaxy Watch Ultra (2025) edition. Same 47 mm hardware, 64 GB storage and Titanium Blue added.

Spec sheet

www.oneplus.com/uk/oneplus-watch-3/specs1Maker product pageoneplus.com/uk/oneplus-watch-3/specsRead 8 October 2026

Not available

Manual

manuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdf2Owner's manualmanuals.plus/m/1d67b974739804b0af768b59851b1d7b7454726774db7bbc8ee939a02edfcf62_optim.pdfRead 8 October 2026Maker Quick Start Guide for OPWWE251, hosted in a public document mirror. The official manual portal was checked but returned only a script shell.

org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx3Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 10 October 2026North America user guide for Galaxy Watch7 and Galaxy Watch Ultra, July 2024. Watch7-only instructions are ignored.

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.

Not available

Not available

Warranty

None of 1 known

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.

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