Smartwatches / Compare

OnePlus Watch 4 vs Samsung Galaxy Watch Ultra2

A

Product A: OnePlus

Watch 4

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B

Product B: Samsung

Galaxy Watch Ultra2

106 of 150 known

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Every value links to where we found it.

Only differences

AOnePlus Watch 4

BSamsung Galaxy Watch Ultra2

General

7 of 10 differ

Series

Watch2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026OnePlus names the product OnePlus Watch 4, in the OnePlus Watch line.

Galaxy Watch Ultra2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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

OPWWE2616Press articlegadgetsandwearables.com/2026/04/16/oneplus-watch-4Read 20 October 2026Leaked final retail box with the product name and model number OPWWE261, matching earlier certification listings. The importer data on the box names the UK, the EU and Poland. OnePlus does not list the model number on its own pages. The OnePlus UK PSTI page lists the Watch Lite as OPWWE262 and has no Watch 4 row.

SM-L715F, SM-L715U4Maker product pagesamsung.com/us/watches/galaxy-watch-ultra2/buy/galaxy-watch-ultra2-47mm-titanium-silver-lte-sku-sm-l715uzsaxaaRead 30 September 20265Spec databasegsmarena.com/samsung_galaxy_watch_ultra2-14805.phpRead 30 September 2026Models: SM-L715F, SM-L715U

GTIN / EAN

Not available

Not available

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

22 April 20263Spec databasegsmarena.com/oneplus_watch_4-14622.phpRead 20 October 2026Launch: announced 2026, April 22.4Press articlegadgetsandwearables.com/2026/04/22/oneplus-watch-4-buyRead 20 October 2026Gadgets & Wearables, 22 April 2026: the watch is official and already listed on the OnePlus website. No price was given.

22 July 20261Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Status

Available3Spec databasegsmarena.com/oneplus_watch_4-14622.phpRead 20 October 2026Launch: Available. Released 2026, April.

Available1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

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

OnePlus Watch 310Reviewnotebookcheck.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 Ultra1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Samsung's launch release gives the Galaxy Watch Ultra2 a battery 35% larger than the previous Ultra model.12Reviewgsmarena.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.

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.

Not available

$699.9911Press releasenews.samsung.com/us/samsung-galaxy-watch-ultra2-watch9-health-companionRead 30 September 2026Availability: Ultra2 USD 699.99.

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

€74910Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Availability and Prices: 47 mm Ultra2 recommended retail price EUR 749.

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

Not available

Not available

ColoursiThe maker's own colour names

Midnight Titanium, Evergreen Titanium1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Design and Material: Midnight Titanium with a Fluororubber strap and Evergreen Titanium with a Mix-Fluororubber strap.

Titanium Silver, Titanium Gray1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Segment

Smartwatch2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026The Overview presents a general smartwatch with sports and wellness modes. It has no outdoor, dive or sport-only positioning.

Outdoor2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Marketed as an outdoor and sport smartwatch for trail running, cycling and diving

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

Not available

5years7Press article9to5google.com/2026/07/23/samsung-galaxy-watch-9-five-years-wear-os-updatesRead 30 September 2026Five years of Wear OS upgrades. Samsung UK lists security updates valid until 31 July 2031

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

7 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.

47mm7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: only the 47 mm variant is on sale. The maker prints 47.4 mm and does not name a marketed size.

47mm1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Case shape

Round4Press articlegadgetsandwearables.com/2026/04/22/oneplus-watch-4-buyRead 20 October 2026The article describes a premium watch with a round screen.

Other2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Cushion 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.

Titanium1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Design and Material, Case: Titanium alloy. The Overview calls it an all-titanium watch body.

Mixed materials2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Material footnote: titanium only on front/back cover areas of metal frame. Other frame parts mix plastic and other materials.

Case material (as published)

Titanium alloy1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Design and Material, Case: Titanium alloy.

Titanium on front and back frame covers, with plastic and other frame materials2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Footnote after titanium durability claims. Grade 4 claim is only secondary, and does not describe the whole frame.

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

PA with fiberglass1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Design and Material, Bottom case: PA with fiberglass.

Ceramic/sapphire crystal back9Reviewgsmarena.com/samsung_galaxy_watch_ultra2-review-2986p2.phpRead 30 September 2026Design and build: back panel is ceramic and sapphire.

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

Height47.4Width47.4Thickness11mm(1.9 × 1.9 × 0.4 in)1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Size and Weight, Dimensions: 47.4 x 47.4 x 11.0 mm. The page does not say whether the sensor area is included. The Overview text calls the 11 mm a diameter, which is the thickness.

Height47.4Width47.1Thickness10.7mm(1.9 × 1.9 × 0.4 in)10Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Specification table dimension footnote: BioActive sensor protrusion excluded. Actual full thickness is greater.

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

43g(1.5 oz)1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Size and Weight: main part about 43 g without strap.

61.5g(2.2 oz)10Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Specification table weight footnote: case only, excludes bands.

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

68g(2.4 oz)1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Size and Weight: the whole machine is about 68 g with wrist strap.

Not available

Durability

7 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/global/oneplus-watch-4/specsRead 20 October 2026Durability: 5ATM, IP69, IP68.

10ATM1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Water resistance standard

Not available

ISO 228101Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026100 meters according to the ISO 22810 standard

Dust and water rating

IP68, IP691Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Durability: 5ATM, IP69, IP68. Overview footnote 4: IP68 and IP69 under GB/T 4208-2017, tested at 1.5 m for 30 minutes and with high-temperature, high-pressure water jets. Not a rating for saltwater use or beach use.

IP69K, IP6X, IPX81Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Spec table says IP69K. Footnote: IPX8, IPX9K and IP6X

Dive rating

Not available

EN 133191Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

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

Not available

40m2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026EN13319 certified, supports underwater activities down to 40 meters

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/global/oneplus-watch-4/specsRead 20 October 2026Durability: Military-grade certification MIL-STD-810H. Overview footnote 3: tested and certified for 16 items.2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Overview: built to MIL-STD-810H military-grade standards.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

MIL-STD-810 tests

Altitude, High temperature, Low temperature, Temperature shock, Solar radiation, Rain, Damp heat, Salt spray, Sand and dust, Immersion, Vibration, Shock, Temperature-humidity-altitude, Fluid contamination, Acidic atmosphere, Freezing rain2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Overview disclaimer 3 lists 16 items: altitude, high temperature, low temperature, temperature shock, solar radiation, rain, damp heat, salt spray, sand dust, immersion, vibration, shock, temperature-humidity-altitude, fluid contamination, acidic atmosphere and freezing rain.

high/low temperature, altitude, humidity, immersion, salt fog, dust, vibration, drop1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Listed as 'high/low temperature, altitude, humidity, immersion, salt fog, dust, vibration, drop, etc.'

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

Min0Max35°C1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Durability: the product can operate normally within an ambient temperature range of 0 to 35 degrees, at 5 to 95 percent relative humidity without condensation. Military test extremes and charging limits are separate.

Not available

Display

6 of 14 differ

Display type

LTPO OLED1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Display, Screen: LTPO OLED flexible display.

OLED1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Display type (as published)

LTPO OLED flexible display1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Super AMOLED1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 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)3Spec databasegsmarena.com/oneplus_watch_4-14622.phpRead 20 October 2026Display, Size: 1.5 inches. This fits 466 pixels at 310 ppi.

1.52in(3.9 cm)1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Resolution

466 × 466px1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Display, Resolution: 466 x 466 pixels.

498 × 498px1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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

310ppi1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Display, PPI: 310 PPI. One reviewer prints 439 ppi, which does not fit 466 pixels on a 1.5 inch display.

Not available

Display area

Not available

Not available

Touchscreen

Yes2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Overview: wet-hand touch control.

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Using the screen, touch operations.

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.

3,000nits1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Brightness: default maximum 600 nits typical, 1500 nits typical when activated in strong sunlight, and a peak of 3000 nits only in the official self-developed sports mode in strong sunlight. The stored 3000 nits is that conditional peak, not a full-screen or default figure.

5,000nits1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Localized peak brightness under high ambient light. Full-screen brightness may differ

Minimum brightness

Not available

Not available

Always-on display

Yes2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Disclaimers 5 and 6 treat AOD as a setting that is off in the 5 day smart mode figure.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Display cover

Sapphire1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Display, Cover glass: Sapphire Crystal.

Sapphire1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Display cover (as published)

Sapphire Crystal1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Sapphire Crystal1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Platform

10 of 15 differ

Platform

Wear OS1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Operating System: Android/Wear OS version Wear OS 6.0. One database says Wear OS 7.0, which the maker page does not.

Wear OS1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Wear OS Powered by Samsung (Wear OS 7)

OS at launch

Wear OS 6.01Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Operating System: Wear OS 6.0 with the OxygenOS Watch 8 watch version.

Wear OS 71Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Software

OxygenOS Watch 81Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Operating System, Watch version: OxygenOS Watch 8.

One UI 9 Watch1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Latest OS

Not available

Not available

Works with

Android2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Disclaimer 5: pairing with the OHealth app, Android 9.0 and above with GMS 23.45.23 and above. iOS and Android (Go edition) are not supported.

Android1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Phone requirement

Android 9.0 or later with Google Mobile Services 23.45.23 or later and the OHealth app. iOS and Android Go are not supported.2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Disclaimer 5, shortened.

Android 13.0 or higher and with more than 1.5GB of memory1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

App store

Yes7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: Wear OS gives access to the Google Play Store.9Reviewbasic-tutorials.com/reviews/mobile-device-reviews/oneplus-watch-4-reviewRead 20 October 2026Review: the Play Store with watch apps is available.

Yes2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Voice assistants

Gemini, Google Assistant1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Voice assistant: Gemini/Google Assistant.

Gemini2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Chipset

Qualcomm Snapdragon W51Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Chip and Storage, Processor: Qualcomm Snapdragon W5 Processor and BES 2800. The Overview names a Dual-Engine Architecture.

Qualcomm Snapdragon Wear Elite (SDW6100)1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Spec table: Qualcomm SDW6100 (Penta-Core, 3nm). Text: Snapdragon Wear Elite Platform

Process

4nm3Spec databasegsmarena.com/oneplus_watch_4-14622.phpRead 20 October 2026Platform, Chipset: Qualcomm Snapdragon W5 Gen 1 (4 nm). The BES2800 coprocessor is not this node.

3nm1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

CPU cores

Not available

51Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

CPU configuration

AOnePlus Watch 4

Not available

BSamsung Galaxy Watch Ultra2

Count	Max clock (GHz)
1	2.1
4	1.95

Source6Measurementgsmarena.com/samsung_galaxy_watch_ultra2-review-2986p3.phpRead 30 September 2026Hardware: one main core at 2.1 GHz, four efficient cores at 1.95 GHz. Core architecture names are not published.

Max CPU clock

Not available

2.1GHz=CalculatedFrom CPU configuration

GPU

Not available

Not available

Low-power coprocessor

BES28001Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Chip and Storage: BES 2800 next to the Snapdragon W5. The Overview calls the pair a dual-engine architecture.

Not available

Memory

1 of 2 differ

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

2GB1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Chip and Storage, Storage: RAM 2GB.

2GB1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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/global/oneplus-watch-4/specsRead 20 October 2026Chip and Storage, Storage: ROM 32GB. Total storage, user space is not stated.

64GB1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Health sensors

4 of 8 differ

Heart rate sensor

Optical heart rate sensor1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Sensor: optical heart rate sensor. The channel count is not stated.

Samsung BioActive Sensor (Optical Bio-signal Sensor + Electrical Heart Signal + Bioelectrical Impedance Analysis)1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

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

Yes2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Disclaimer 8: the activation time of the ECG function in the 60s Wellness Overview depends on the progress of local ECG function certification and registration. The sensor list on the Specs page names no separate electrical sensor.7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: ECG is listed as a measurement and is enabled in Germany. The review sample was tested in Germany. Another review says the ECG is part of the 60 second check and is not an independent app.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Electrical Heart Signal in the BioActive sensor

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

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Sensor: optical blood oxygen sensor. Health and Workout: manual SpO2, all-day SpO2 tracking and low SpO2 indicators.

Yes5Spec databasegsmarena.com/samsung_galaxy_watch_ultra2-14805.phpRead 30 September 2026SpO2 listed under sensors

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

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Sensor: wrist temperature sensor. Health and Workout: wrist temperature monitoring supported.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

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

Not available

Calibrated with a cuff2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Measure blood pressure after calibrating, through the Samsung Health Monitor app

Body composition sensor

Not available

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 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-cleared sleep apnea risk detection1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Sleep apnea feature is described as FDA-cleared, not FDA-approved. Availability is country-specific.

Motion and environment sensors

3 of 9 differ

Accelerometer

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Barometric altimeter

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Sensor: air pressure sensor.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

Compass

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Sensor: geomagnetic sensor.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Geomagnetic sensor

Ambient light sensor

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Light Sensor

Depth gauge

Not available

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Tracks depth, time and water temperature on entering the water

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

Not available

40m2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Water temperature sensor

Not available

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

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, Blood oxygen app, Sleep tracking, Stress tracking, Cycle tracking1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Health and Workout: heart rate monitoring with high and low alerts, resting heart rate, sleep quality assessment, manual and all-day SpO2 and Cycle Tracker. Stress tracking is from the review sources. The 60s Wellness Overview and the ECG function depend on local certification and are not stored as an ECG app.7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review lists pulse, SpO2, skin temperature, sleep, stress and altitude as measured values. ECG is enabled in Germany.

ECG app, Heart rate variability, Sleep tracking, Sleep apnea notifications, Readiness score, Body composition, Noise monitoring1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Sleep apnea feature (FDA clearance), Vitals (HRV), noise alerts (Sound Monitoring). ECG app per GSMArena. Energy Score and BIA per the UK page2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Energy Score (readiness), sleep apnea risk detection, sleep tracking5Spec databasegsmarena.com/samsung_galaxy_watch_ultra2-14805.phpRead 30 September 2026ECG app: listed as 'ECG certified'

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, Recovery advice, Running dynamics, Running power, Pool swim1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Health and Workout: 6 types of automatic recognition (running, walk, cycling, swimming, rowing machine, elliptical machine), recovery time, indoor swimming as a professional mode, and running footnote 11 naming vertical ratio and running power data. Open water swimming is announced for a later OTA update and is not stored. Aerobic training effect and cardiopulmonary capacity are listed but are not stored as VO2 max.2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Disclaimer 10: professional sport mode for 11 sports including running, skiing, tennis, badminton, indoor swimming, jump rope, hiking, walking, cycling, elliptical and rowing. Disclaimer 11: running data such as vertical ratio and running power are not available in indoor runs, which means they exist for outdoor runs. A pacer function and lactate threshold monitoring are named as advanced running features.9Reviewbasic-tutorials.com/reviews/mobile-device-reviews/oneplus-watch-4-reviewRead 20 October 2026Review: the professional running mode gives step frequency, vertical oscillation, ground contact time and cadence. It also lists 11 professional sports modes and a pace assistant.

VO2 max, Training load, Recovery advice, Route navigation, Turn-by-turn navigation, Trackback1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Daily Cardio Load and recovery guidance, Fitness Index uses VO2 Max. Routes, turn by turn and Track Back per the UK page2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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 meter, Speed and cadence2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Power meters, speed sensors and cadence sensors. Smart trainers not supported

Safety

2 of 6 differ

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

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Health and Workout, Emergency Rescue: Fall Detection. The page does not say who is notified.

Yes2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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

Yes2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Five presses of the home button reach 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

86dB2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 202686 decibels, audible up to 180 meters. Quick Button held 5 seconds

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/global/oneplus-watch-4/specsRead 20 October 2026GNSS: Dual band L1+L5: Beidou, GPS, Galileo, GLONASS, QZSS. The band applies to the group as printed.

GPS (L1+L5), Glonass, Beidou, Galileo, QZSS2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026GNSS: Dual band L1+L5.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026

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

8 of 15 differ

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

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Not available

Bluetooth version

5.21Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Bluetooth: Bluetooth 5.2.

6.01Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 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.

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Not available

Wi-Fi standard

Not available

Wi-Fi 42Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Published as 802.11a/b/g/n 2.4GHz+5GHz

Wi-Fi bands

2.4 GHz, 5 GHz1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Wi-Fi: WLAN 2.4G/5G. The standard is not stated.

2.4 GHz, 5 GHz1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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

No1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026eSIM: Unsupported. No LTE model is listed.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Galaxy Watch Ultra2 is sold as LTE only (47 mm LTE)

Network

Not available

LTE1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 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

1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 66, 71, 34, 38, 39, 40, 412Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Specifications > Network/Bearer: SM-L715F FDD and TDD LTE bands, not SM-L715U.

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/global/oneplus-watch-4/specsRead 20 October 2026NFC: Supported.

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Contactless payments

Yes1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Samsung Wallet section enables watch payments.

Payment services

Google Wallet1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Mobile Payment: Google Wallet.

Samsung Wallet8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Samsung Wallet section. Payment availability depends on country and bank.

Ultra-wideband

Not available

Not available

Satellite

Not available

Not available

ANT+

Not available

Not available

Audio

2 of 4 differ

Speaker

Yes3Spec databasegsmarena.com/oneplus_watch_4-14622.phpRead 20 October 2026Sound, Loudspeaker: Yes. Smartwatch review sources confirm a speaker.

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Device layout labels the speaker.

Microphones

18Reviewprofesionalreview.com/2026/06/01/oneplus-watch-4-review/ampRead 20 October 2026Review of the underside: a microphone on the right side and a speaker opening on the left side, with four charging contacts. The review names one microphone.

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 only7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: you can only make calls when the phone is nearby. There is no eSIM.

Cellular or phone8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Phone section: Bluetooth calls via phone, LTE versions can call independently.

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

Yes7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: music storage on the 32 GB and native offline playback with Spotify from the Play Store.

Yes8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Music section: transferring music files and playback from the Watch.

Controls

5 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.

17Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: the rotating knob is not counted. One extra Workout button. The Spanish review describes an upper wheel and a lower flat button.8Reviewprofesionalreview.com/2026/06/01/oneplus-watch-4-review/ampRead 20 October 2026Review: two controls on the right side. An upper wheel and a lower flat button.

38Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Device layout, pages 7-12. Count operating controls, excluding strap releases.

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

Workout button7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: the additional Workout button. The Spanish review says the lower button opens the sport list.

Home button, Back button, Quick button8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Device layout and buttons, pages 7-12. Strap-release controls excluded.

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

Rotating7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: rotating and pressable knob plus an extra workout button. The Spanish review also describes a metal wheel that turns and presses. Haptic feedback is not stated.8Reviewprofesionalreview.com/2026/06/01/oneplus-watch-4-review/ampRead 20 October 2026Review: the upper right button is a metal wheel that turns and presses.

None8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Device layout: Home and Back buttons, plus Quick button on Ultra2. No rotating crown.

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

Not available

Touch8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Using the bezel section: touch bezel gestures. Fixed physical ring does not rotate.

Gestures

Raise wrist to wake7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: the display wakes when the wrist is turned.

Not available

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.

646mAh1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Battery Life, Battery capacity: 646 mAh typical and 632 mAh rated. The typical figure is stored because it is the number used in the maker's and reviewers' headline.

800mAh1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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 4

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

Source1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Battery Life: 5 days in smart mode, 3 days for heavy use and 16 days in power saver mode. Days are stored as hours. Overview footnote 6 says the 5 days use the official watch face, AOD off, default health monitoring, 220 wrist raises, 130 messages, 20 minutes of screen use, 30 minutes of outdoor running and 15 minutes of music per day. Footnote 7 says the 16 days use all-day Bluetooth, 90 minutes of outdoor workouts a week, 180 wrist raises and 180 messages a day, and 6 hours of sleep detection.2Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026Overview: 5 days in smart mode and 16 days in power-saver mode. Disclaimer 6 gives the 5 day usage case with AOD off. Disclaimer 7 gives the 16 day usage case.

BSamsung Galaxy Watch Ultra2

Mode	With solar	Hours (h)
Smartwatch	No	80
Always-on	No	60
GPS	No	20

Source2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Smartwatch row: up to 80 hours with Always On Display disabled. Always-on row: up to 60 hours. GPS row: 'GPS runs for up to 20 hours'

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

80h=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.

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

20h=CalculatedFrom Claimed battery life

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.

Not available

Proprietary wireless charger8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Charging the battery, page 13: only supplied Samsung-approved wireless charger. Product announcement calls WPC-based wireless charging. This does not establish universal Qi interoperability or depend on inferring magnets from a picture.

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

Not available

Not available

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.

7.5W1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Battery Life, Max charging power: about 7.5 W. Stored as a maker figure for the watch.

10W5Spec databasegsmarena.com/samsung_galaxy_watch_ultra2-14805.phpRead 30 September 2026Battery > Charging: 10W wireless. This is a secondary specification, not a measured power draw.

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

Not available

Yes1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 20262Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Up to 40 % in around 30 mins with the dedicated wireless charger (EP-OL715) and a 5V/2A PD adapter

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

Not available

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.

75min1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Battery Life, Max charging time: about 75 minutes. The page does not name the charger or the start level.

90min11Press releasenews.samsung.com/us/samsung-galaxy-watch-ultra2-watch9-health-companionRead 30 September 2026Specification table: 100% in 90 min, 40% in 30 min. Maker claim.

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.

Not available

96h6Measurementgsmarena.com/samsung_galaxy_watch_ultra2-review-2986p3.phpRead 30 September 202696 h with AOD off, raise-to-wake, HR every 10 min, nightly sleep and four workouts as detailed in the Battery life section.

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 4

Not available

BSamsung Galaxy Watch Ultra2

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

Source6Measurementgsmarena.com/samsung_galaxy_watch_ultra2-review-2986p3.phpRead 30 September 2026AOD off, raise-to-wake, HR every 10 minutes, nightly sleep and four workouts as detailed in Battery life section.

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

6 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.

22mm7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: the supplied strap uses a standard 22 mm attachment, so it is easy to change.

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.

Not available

Yes2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026Swap bands in a click

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

Standard 22 mm watchbands7Reviewsmartzone.de/oneplus-watch-4-im-testRead 20 October 2026Review: standard 22 mm attachment.

Galaxy Watch Ultra dynamic lug system (custom, not standard pins)6Measurementgsmarena.com/samsung_galaxy_watch_ultra2-review-2986p3.phpRead 30 September 2026

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

Fluoroelastomer1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Design and Material, Strap: Fluororubber on Midnight Titanium and mixed fluororubber on Evergreen Titanium. Fluororubber is stored as fluoroelastomer.

Hydrogenated nitrile butadiene rubber (HNBR)10Press releasenews.samsung.com/de/samsung-galaxy-watch-ultra2-und-die-galaxy-watch9-smarte-begleiter-am-handgelenkRead 30 September 2026Band collections > Marine Band: premium elastomer (HNBR). This is the actual current Marine Band, distinct from the older silicone band described in the review.

Strap

Not available

Marine Band1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Marine Band is the band shown with the watch on Samsung UK. PeakForm and Trail bands are other options2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

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 4

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

Source1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026Design and Material, Wrist size: 140 mm-210 mm. This is the range of the supplied strap.

BSamsung Galaxy Watch Ultra2

Not available

Regulatory

None of 3 known

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.

Not available

Not available

Other certifications

Not available

Not available

In the box

1 of 2 differ

In the box

Watch body, Charging base, Strap, USB-C charging cable, User Guide & Safety and Warranty Booklet1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026In The Box: watch body, charging base, strap, USB-C charging cable, user guide and safety and warranty booklet.

Galaxy Watch Ultra2, Marine Band, Wireless charging pad8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026Getting started > Device layout/package components and charging instructions. Supplied band depends on purchased package.

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/global/oneplus-watch-4/specsRead 20 October 2026In The Box lists a charging base and a USB-C charging cable and no power adapter.

No1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Manufacturer support response on product page: included 10W magnetic USB-C charging puck requires a separate USB-C power adapter.

Links

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Product page

www.oneplus.com/global/oneplus-watch-42Maker product pageoneplus.com/global/oneplus-watch-4Read 20 October 2026OnePlus Watch 4 overview page on the global site.

www.samsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeub2Maker product pagesamsung.com/uk/watches/galaxy-watch/galaxy-watch-ultra2-titanium-silver-lte-sm-l715fzsaeubRead 30 September 2026

Spec sheet

www.oneplus.com/global/oneplus-watch-4/specs1Maker product pageoneplus.com/global/oneplus-watch-4/specsRead 20 October 2026OnePlus Watch 4 Specs page on the global site. The values sit in the page data, grouped as Design and Material, Size and Weight, Display, Brightness, Chip and Storage, Battery Life, Operating System and others.

news.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wrist1Press releasenews.samsung.com/global/samsung-galaxy-watch-ultra2-and-watch9-your-health-companion-on-the-wristRead 30 September 2026Launch specification table separates Ultra2 from Watch9.

Manual

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org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx8Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 30 September 2026EU English user guide covers SM-L34X, SM-L35X and SM-L71X.

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

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Warranty

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

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