Smartwatches / Compare

Garmin Forerunner 255 vs Suunto Race 3S

A

Product A: Garmin

Forerunner 255

81 of 150 known

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B

Product B: Suunto

Race 3S

84 of 150 known

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Only differences

AGarmin Forerunner 255

BSuunto Race 3S

General

7 of 10 differ

Series

Forerunner1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Product page title is Forerunner 255, running smartwatch, 46 mm.

Race1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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

010-02641-011Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026US page for the 46 mm watch without music lists part number 010-02641-01 (Tidal Blue, $349.99). The Music toggle on the same page links the music watch to 010-02641-20, so music watches are other models. 255S is the 41 mm size, SKU 010-02641-02.

SS051645000, SS051646000, SS051647000, OW2651Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 20264Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 10.2: radio equipment type OW265.

GTIN / EAN

Not available

Not available

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

1 June 20223Press releasegarmin.com/en-US/newsroom/press-release/sports-fitness/garmin-celebrates-global-running-day-with-the-introduction-of-the-forerunner-255-seriesRead 11 October 2026Garmin release dated June 1, 2022.

15 October 20265Press releasesuunto.com/de-at/Nachrichten/suunto-launches-race-3s-next-generation-performance-watchRead 20 October 2026Suunto launch announcement dated 15 October 2026.

Status

Not available

Available1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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.

Garmin Forerunner 2658Reviewdcrainmaker.com/2023/03/garmin-forerunner-review-amoled.htmlRead 11 October 2026Review: the Forerunner 265 series at first glance seems like an AMOLED version of the Forerunner 255, with several hardware differences. It follows the 255 in the Forerunner line.10Maker product pagegarmin.com/nl-NL/blogRead 23 October 2026Garmin's Dutch blog says the Forerunner 265 is the successor of the Forerunner 255.

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.

$349.993Press releasegarmin.com/en-US/newsroom/press-release/sports-fitness/garmin-celebrates-global-running-day-with-the-introduction-of-the-forerunner-255-seriesRead 11 October 2026Suggested retail price $349.99 for Forerunner 255 and 255S. Music models are $399.99.

$5991Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026The US page lists $599 with pre-order shipping from 29 October 2026. Trade press reports $599 as the launch price.9Reviewdcrainmaker.com/2026/10/suunto-race-3s-in-depth-review-upgrade.htmlRead 20 October 2026DC Rainmaker in-depth review: priced at $599 USD and 499 EUR. The review's battery figures are an extrapolation from one 98-minute run and are not stored as a measurement.

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.

€349.994Press articlenextpit.de/news/garmin-forerunner-255-und-955-vorgestellt-touchscreen-mehr-akkuRead 11 October 2026nextpit.de, 1 June 2022: the Forerunner 255 costs 349,99 EUR in every size, the Music edition 50 EUR more. German price incl. VAT.

€4993Maker product pagesuunto.com/de-de/Produkte/Sportuhren/suunto-race-3s/suunto-race-3s-titanium-blackRead 20 October 2026German Suunto store page structured data: price 499.00 EUR, in stock. Germany, incl. VAT. Trade press reports 499 EUR as the European launch price on 15 October 2026.

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

US, DE3Press releasegarmin.com/en-US/newsroom/press-release/sports-fitness/garmin-celebrates-global-running-day-with-the-introduction-of-the-forerunner-255-seriesRead 11 October 2026US release with US dollar suggested retail prices.4Press articlenextpit.de/news/garmin-forerunner-255-und-955-vorgestellt-touchscreen-mehr-akkuRead 11 October 2026German launch pricing in euros. Documented subset together with the US release.

US, DE, GB1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026US store sells it as a pre-order. The German and UK Suunto stores sell it from 15 October 2026.

ColoursiThe maker's own colour names

Tidal Blue1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026US store lists Tidal Blue for this model. Other regional colours exist but are not listed on this page.3Press releasegarmin.com/en-US/newsroom/press-release/sports-fitness/garmin-celebrates-global-running-day-with-the-introduction-of-the-forerunner-255-seriesRead 11 October 2026Release names tidal blue as a new colour.

Titanium Black, Titanium Feather, Titanium Orchid1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 20265Press releasesuunto.com/de-at/Nachrichten/suunto-launches-race-3s-next-generation-performance-watchRead 20 October 2026Three colours: Orchid, Feather and Black.

Segment

Sport1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Garmin presents it as a running smartwatch.

Sport1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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

Not available

Not available

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

Not available

Not available

Case

6 of 8 differ

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

46mm1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

46mm1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Case shape

Round1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs describe the display as a diameter and the pictured case is round.

Round1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026The product photos show a round case. The spec table lists watch diameter 46 mm.

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

Fibre-reinforced polymer6Reviewandroidcentral.com/wearables/garmin-forerunner-255-reviewRead 11 October 2026Review spec box: materials fiber-reinforced polymer. The maker lists only the bezel as fiber-reinforced polymer and no other case material.7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: fiber-reinforced polymer bezel and case, silicone strap.

Mixed materials1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026The spec table lists the case as glass fibre reinforced polyamide and the bezel as titanium. The FAQ says the bezel and case-back are titanium and the case is a high-performance polymer. The EU page lists the case as titanium, so the pages differ. The US and APAC wording is used.

Case material (as published)

Fiber-reinforced polymer6Reviewandroidcentral.com/wearables/garmin-forerunner-255-reviewRead 11 October 2026Review spec box wording.7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table wording.

Glass fibre reinforced polyamide case with titanium bezel and titanium case-back1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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

Not available

Titanium1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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

Height45.6Width45.6Thickness12.9mm(1.8 × 1.8 × 0.5 in)1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Physical size 45.6 x 45.6 x 12.9 mm. Not stated whether the heart rate sensor bump is included.

Height46Width46Thickness11.4mm(1.8 × 1.8 × 0.4 in)1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Measurements: 46 x 46 x 11.4 mm. Whether the thickness includes the heart rate sensor is not stated.

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

Not available

38g(1.3 oz)5Press releasesuunto.com/de-at/Nachrichten/suunto-launches-race-3s-next-generation-performance-watchRead 20 October 2026German release: 56 g including the silicone strap and only 38 g for the watch without strap.

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

Not available

56g(2 oz)1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: weight 56 g. The FAQ says around 56 g with the silicone strap.

Durability

1 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 pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Water rating 5 ATM.

5ATM1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: water resistance 50 m. Marketing and FAQ: 5 ATM, not built for scuba diving. The user guide says 100 m according to ISO 22810, which conflicts with the product page. The product page value is stored.

Water resistance standard

Not available

Not available

Dust and water rating

Not available

Not available

Dive rating

Not available

Not available

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

Not available

Not available

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

Not available

Not available

MIL-STD-810 tests

Not available

Not available

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

Min-20Max60°C2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Specifications page 101: operating temperature -20 to 60 C. Charging range 0 to 45 C is excluded.

Min-20Max55°C1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: operating -20 to +55 C. The same range is given for storage.

Display

11 of 14 differ

Display type

MIP1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Display type sunlight-visible, transflective memory-in-pixel (MIP).

OLED1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Display type (as published)

Sunlight-visible, transflective memory-in-pixel (MIP)1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

AMOLED1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026The spec table says display type matrix and backlight AMOLED. The FAQ says LTPO AMOLED while the launch press release says LTPS hybrid AMOLED. The generic OLED class and the name AMOLED are stored.

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

1.3in(3.3 cm)1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: 1.3 inch (33 mm) diameter.

1.32in(3.4 cm)1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Resolution

260 × 260px1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: 260 x 260 pixels.

466 × 466px1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 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

No2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026The manual describes control only with the LIGHT, UP, DOWN, BACK and START/STOP buttons and never mentions touch input.

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Max refresh rateiHighest published display refresh rate in active operation.

Not available

60Hz1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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

Not available

5Hz1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Flagship Display section: 5 Hz to 60 Hz adaptive refresh rate.

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

Not available

2,000nits1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Flagship Display section: 2000 nits peak brightness. Suunto compares it with 600 nits on the Race S.

Minimum brightness

Not available

Not available

Always-on display

Not available

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Battery table gives separate figures with AOD. The user guide has an Always-on display setting.4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 3.2: Always-on display can be toggled on or off.

Display cover

Gorilla Glass1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Sapphire1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Display cover (as published)

Corning Gorilla Glass 31Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Lens material Corning Gorilla Glass 3. Bezel material is fiber-reinforced polymer. Case material is not listed, so case_material is not stored.

Sapphire crystal1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: glass material sapphire crystal.

Platform

3 of 15 differ

Platform

Proprietary1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Garmin watch software with downloadable Connect IQ watch faces, data fields and apps.

Proprietary4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026The user guide documents Suunto's own watch software and the Suunto app. No Wear OS, watchOS or HarmonyOS is named. The maker states no OS name.

OS at launch

Not available

Not available

Software

Not available

Not available

Latest OS

Not available

Not available

Works with

iOS, Android1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

iOS, Android1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Phone requirement

Not available

Suunto app on iOS 17 or later, or Android 8 or later1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ, connecting to the Suunto app: iOS 17 or later, or Android 8 or later.

App store

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list Connect IQ downloadable watch faces, data fields and apps and an on-device Connect IQ store.

Not available

Voice assistants

Not available

Not available

Chipset

Not available

Ambiq Apollo 5101Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Performance section: new-generation Apollo 510 chip. The maker does not name Ambiq. Ambiq is named by The5KRunner and DC Rainmaker.5Press releasesuunto.com/de-at/Nachrichten/suunto-launches-race-3s-next-generation-performance-watchRead 20 October 2026German release names the new-generation Apollo 510 processor.

Process

Not available

Not available

CPU cores

Not available

Not available

CPU configuration

Not available

Not available

Max CPU clock

Not available

Not available

GPU

Not available

Not available

Low-power coprocessor

Not available

Not available

Memory

1 of 2 differ

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

Not available

Not available

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

4GB1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Memory/History 4 GB. The manual lists up to 4 GB of music storage for Music models only.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Music storage up to 4 GB applies to Music models.

64GB1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: offline map storage size 64GB (maps+music). Space available to the user is not stated.

Health sensors

1 of 8 differ

Heart rate sensor

Garmin Elevate wrist heart rate monitor1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Optical wrist heart rate sensor with six LEDs and four photodetectors1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Performance section names an upgraded wrist sensor behind a 2.5D curved lens. The press release names six LEDs and four photodetectors.

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

No7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: electrical heart rate No, ECG No. The Garmin product page lists no ECG sensor or app.

No6Spec databasegadgetsandwearables.com/technical-specs/suunto-race-3-sRead 20 October 2026Spec table: ECG No.

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Pulse Ox blood oxygen, spot-check and optional all-day acclimation and in sleep. Not available in all countries.

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: blood oxygen on demand and during sleep, for reference only. The EU spec table lists altitude acclimation with blood oxygen.

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

No2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026The manual describes an internal temperature sensor whose reading is affected by body temperature and offers an external tempe sensor for ambient temperature. No skin temperature function is described.7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: skin temperature No. The Garmin page lists only a thermometer.

No6Spec databasegadgetsandwearables.com/technical-specs/suunto-race-3-sRead 20 October 2026Spec table: skin temperature No.

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

Not available

Not available

Body composition sensor

Not available

Not available

Skin conductance (EDA)

Not available

Not available

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

Not available

Not available

Motion and environment sensors

3 of 9 differ

Accelerometer

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Yes4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Compass section: Race 3S has a gyro-assisted compass.

Barometric altimeter

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Compass

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Ambient light sensor

No7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: ambient light sensor No. The Garmin sensor list has none.

Yes6Spec databasegadgetsandwearables.com/technical-specs/suunto-race-3-sRead 20 October 2026Spec table: ambient light Yes.

Depth gauge

Not available

Yes4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 4.6, printed page 28: the watch is capable of measuring depth up to 10 m in snorkeling and mermaiding modes.

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

Not available

10m4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 4.6, printed page 28: measuring depth up to 10 m.

Water temperature sensor

Not available

Not available

Health and fitness

4 of 5 differ

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

Continuous heart rate, Heart rate alerts, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking, Cycle tracking1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list heart rate every second, high and low abnormal heart rate alerts, Pulse Ox, HRV status, advanced sleep, all-day stress and women's health in Garmin Connect. Sleep stages are in the manual.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Sleep statistics include total hours of sleep, sleep stages and sleep score (page 42 area).

Continuous heart rate, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026EU spec table and FAQ: heart rate during daily activities, daily minimum heart rate, sleep with deep, light and REM, HRV from sleep and HRV measurement, stress and recovery status, SpO2. Daily resource level is not stored as a readiness score.

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, Training load, Recovery advice, Running dynamics, Running power, Pool swim, Open water swim, Strength rep counting, Interval workouts, Route navigation, Trackback1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list VO2 Max (run), training load, recovery time, running dynamics, running power, pool and open-water swim metrics, automatic rep counting, interval training, course guidance and TracBack. Running dynamics need a pod or HRM-Pro. No golf course or ClimbPro entry.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Page 62: running power can be measured with a compatible running dynamics accessory or the watch sensors. Page 63: Running Dynamics Pod records running dynamics.

VO2 max, Training load, Recovery advice, Running power, Running dynamics, Pool swim, Open water swim, Interval workouts, Route navigation, Turn-by-turn navigation, Climb detection1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec tables and FAQ: VO2max, training load, recovery time, wrist-based running power, running dynamics (cadence, ground contact time, vertical oscillation), pool and open-water swimming, structured intervals, route navigation, Climb Guidance. Race Planner is announced for a later update and is not stored. Turn-by-turn is in the user guide.4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 5.4, printed page 41: routes made in the Suunto app can carry turn-by-turn instructions with a sound alert. Section 4.2.1, page 26: Find back is a direct guide to the start and is not stored as trackback. Section 5.6, page 45: Climb guidance works while navigating a route.

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

Snorkel, Freedive1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: fine for swimming and snorkelling, not built for scuba diving. The user guide has Snorkeling and mermaiding sport modes.

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

Heart rate strap, Power meter, Speed and cadence, Foot pod, Smart trainer1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list heart rate from external HRM, power meter compatible, speed and cadence sensor support, foot pod capable and smart trainer control.

Heart rate strap, Speed and cadence, Power meter, Foot pod1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: standard Bluetooth LE accessories including chest heart rate straps, speed and cadence sensors, power meters, Stryd and running dynamics pods. The EU table lists Bluetooth foot pods.

Safety

3 of 6 differ

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

No1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list only incident detection during select activities, which is limited to certain outdoor activities. Not counted as general fall detection.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Page 83: incident detection is a supplemental feature available only for certain outdoor activities.

Not available

Car crash detection

Not available

Not available

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list Assistance. The manual says it sends a message with name, LiveTrack link and GPS location to emergency contacts through a paired phone with data. It does not call emergency services.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Safety and Tracking, page 84: Assistance sends a message with name, LiveTrack link and GPS location to emergency contacts. Paired phone with data plan required.

Not available

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

Not available

Not available

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list live event sharing (Android only). The manual lists LiveTrack.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Safety and Tracking: LiveTrack lets friends and family follow activities in real time.

Not available

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

No2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Controls menu: Flashlight turns on the screen to use the watch as a flashlight. A lit display is not a dedicated LED.7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: LED flashlight No, matching the manual.

No1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: the AMOLED screen doubles as a flashlight by showing full-brightness white. DC Rainmaker also says there is no physical LED.

Positioning

1 of 3 differ

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

GPS, GLONASS, Galileo, QZSS, BeiDou1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list GPS, GLONASS, Galileo, QZSS and BeiDou. Multi-band GPS is listed. Signal bands are not named.

GPS, GLONASS, Galileo, QZSS, BeiDou1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: GPS, GLONASS, Galileo, QZSS and BeiDou. Four systems at once and up to 32 satellites.

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list Multi-band GPS. Battery table calls it All-Systems GNSS plus Multi-Band.

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: GNSS frequency support dual band (L1+L5).

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

No1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026No map entry in the specs. Only breadcrumb trail, courses and TracBack are listed, which are not offline maps.

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: offline maps on watch yes. FAQ: free global offline maps with contour lines and place names.

Connectivity

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table, connectivity: Bluetooth. The version is not stated.

Bluetooth version

Not available

Not available

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

No2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Status icons: Wi-Fi technology status for Forerunner music watches only. The spec table lists no Wi-Fi for this model.

Yes6Spec databasegadgetsandwearables.com/technical-specs/suunto-race-3-sRead 20 October 2026Spec table: Wi-Fi Yes (802.11 b/g/n, 2.4 GHz). The5KRunner's FCC summary mentions both 2.4 GHz and 5 GHz Wi-Fi, so the bands are left out.

Wi-Fi standard

Not available

Wi-Fi 46Spec databasegadgetsandwearables.com/technical-specs/suunto-race-3-sRead 20 October 2026Spec table: 802.11 b/g/n, which is Wi-Fi 4.

Wi-Fi bands

Not available

Not available

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

No1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list Connectivity as Bluetooth and ANT+ only. No Wi-Fi and no cellular.

No6Spec databasegadgetsandwearables.com/technical-specs/suunto-race-3-sRead 20 October 2026Spec table: cellular No. The maker lists only Bluetooth as device connectivity.

Network

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Garmin Pay contactless payments are listed. NFC itself is not named in the specs.

Not available

Contactless payments

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Garmin Pay is listed.

Not available

Payment services

Garmin Pay1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Not available

Ultra-wideband

No7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: UWB No. Garmin lists Bluetooth and ANT+ only.

Not available

Satellite

Not available

Not available

ANT+

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Not available

Audio

4 of 4 differ

Speaker

No7Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: speakers No. Garmin lists no voice calls, speaker or music playback for this non-music model.

Not available

Microphones

07Spec databasegadgetsandwearables.com/technical-specs/garmin-forerunner-255Read 11 October 2026Spec table: microphone No. Garmin lists no voice calls or microphone for this model.

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.

None1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs list text response and reject phone call with text only. No voice call, speaker or microphone entry and no cellular. No voice calls on the watch.

Not available

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

No2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Specifications page 101 lists music media storage for Forerunner music watches (Forerunner 255 Music). This model is the non-music watch.

Not available

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.

52Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Overview, page 2: LIGHT, UP, DOWN, BACK and START/STOP.

24Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 2.1: two buttons besides the crown.

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

LIGHT, UP, DOWN, BACK, START/STOP2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Overview page 2. START and STOP share one button.

Upper button, Lower button4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 2.1, printed page 8: an upper button, a crown also called the middle button, and a lower button.

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

None2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Overview shows five buttons and no crown.

Rotating4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 2.1: scroll the crown to move in displays and menus.

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

None2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Overview shows five buttons and no rotating bezel.

Not available

Gestures

Raise and turn your arm to turn on the backlight2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Backlight settings: Gesture turns on the backlight by raising and turning your arm to look at your wrist.

Raise to wake4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 3.2: Raise to wake with Off, Display only and Full wake mode options.

Battery and charging

10 of 13 differ

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

Not available

380mAh8Retailer pagegpstraining.co.uk/blogs/reviews/suunto-race-3s-first-reviewRead 20 October 2026UK retailer review: the battery has grown from 260 mAh to 380 mAh. Suunto does not publish the capacity. No second source gives the figure.

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

AGarmin Forerunner 255

Mode	With solar	Hours (h)
Smartwatch	No	336
GPS	No	30
GPS, all systems	No	25
GPS, dual-band	No	16

Source1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Smartwatch mode up to 14 days (336 h). GPS-only GNSS up to 30 h. All-Systems GNSS up to 25 h. All-Systems plus Multi-Band up to 16 h. Manual footnote: smartwatch mode includes activity tracking, phone notifications and wrist heart rate.

BSuunto Race 3S

Mode	With solar	Hours (h)
Smartwatch	No	288
GPS, dual-band	No	38
GPS, dual-band, always-on display	No	32
GPS, all systems	No	45
GPS, all systems, always-on display	No	40
GPS, power saving	No	120

Source1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table. Training with all-systems GNSS and multi-band: up to 38 h (AOD 32 h). All-systems GNSS and single-band: up to 45 h (AOD 40 h). Power saving GNSS modes: up to 120 h. Daily use smartwatch mode: up to 12 days, stored as 288 h. The marketing section also says up to 10 days in training mode. Suunto warns that real life varies.

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.

336h=CalculatedFrom Claimed battery life

288h=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

Not available

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

30h=CalculatedFrom Claimed battery life

Not available

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

No9Reviewdcrainmaker.com/2022/06/garmin-forerunner-multisport.htmlRead 11 October 2026Review covers the Forerunner 255, 255S, 255 Music and 255S Music with no solar model. Solar is introduced in this launch only on the Forerunner 955 Solar.

Not available

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

Proprietary plug1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Garmin proprietary plug charger.

Magnetic pins8Retailer pagegpstraining.co.uk/blogs/reviews/suunto-race-3s-first-reviewRead 20 October 2026Review: magnetic charging cable, the same stronger-magnet cable as the Race 2 and Vertical 2. DC Rainmaker also describes a magnetic braided cable.

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

Not available

Use only the supplied USB charging cable. Suunto recommends a USB charger with 5 V and 1 A or more. A full charge takes around 1.5 to 2 hours.1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: a 5 V and 1 A or higher USB charger is recommended and a full charge takes around 1.5 to 2 hours. Charging temperature conflicts between pages (0 to 35 C or 0 to 45 C).

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

Not available

Not available

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

Not available

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: fast charging support yes.

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

Not available

Charge time10 minUse time10 h1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: ten minutes on the charger gives about 10 hours of dual-frequency GPS.

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.

120min2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Tips for charging: charging a fully depleted battery takes up to two hours, from a Garmin approved AC adapter or a computer USB port. Stored as a nominal claim of 120 minutes with the up-to qualifier.

Not available

Measured

None of 4 known

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Strap

3 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 pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: quick release bands, 22 mm, industry standard.

22mm1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: strap width 22 mm.

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

Yes1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

Yes1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: 22 mm quick-release silicone strap that you can swap yourself.

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

Industry standard 22 mm quick release bands1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026

22 mm quick-release straps1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

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

Silicone1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: Strap material silicone.

Silicone1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026

Strap

Not available

Suunto 22 mm silicone strap1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026In the box list: Suunto 22 mm silicone strap.

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

AGarmin Forerunner 255

Wrist (min) (mm)	Wrist (max) (mm)
130	205

Source1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Specs: fits wrists with a circumference of 130-205 mm. This is the overall range for the watch with its supplied silicone strap.

BSuunto Race 3S

Size	Wrist (min) (mm)	Wrist (max) (mm)
Silicone strap	125	175

Source1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Spec table: wrist sizes 125-175 mm. An accessory strap reaches 215 mm.

Regulatory

2 of 3 differ

FCC ID

Not available

RYPOW2657Press articlethe5krunner.com/2026/10/02/0-regulatory-filing-september-2026Read 20 October 2026Reports FCC ID RYPOW265 for Suunto model OW265, granted 27 September 2026. The page says the FCC record has no product name. Suunto's user guide ties OW265 to the Race 3S. Not checked on fcc.gov.

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

0.116W/kg7Press articlethe5krunner.com/2026/10/02/0-regulatory-filing-september-2026Read 20 October 2026Reports a maximum wrist SAR of 0.116 W/kg from the FCC filing, tested by Shenzhen BALUN Technology.

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

ANT+ certified2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026Front matter: this product is ANT+ certified.

CE (Directive 2014/53/EU)4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Section 10.2: Suunto Oy declares radio equipment type OW265 in compliance with Directive 2014/53/EU.

In the box

1 of 2 differ

In the box

Forerunner 255, Charge/data cable, Documentation1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026In the Box tab: Forerunner 255, charge/data cable, documentation.

Suunto Race 3S watch, Suunto 22 mm silicone strap, Charging cable, Quick guide, Warranty info1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026In the box: watch, 22 mm silicone strap, charging cable, quick guide, warranty info.

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

No1Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026Box lists a charge/data cable and no power adapter.

No1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026The in-the-box list has no power adapter.

Links

Not compared

Product page

www.garmin.com/en-US/p/780139/pn/010-02641-011Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026US store page for SKU 010-02641-01.

www.suunto.com/Products/sports-watches/suunto-race-3s/suunto-race-3s-titanium-black2Maker product pagesuunto.com/Products/sports-watches/suunto-race-3s/suunto-race-3s-titanium-blackRead 20 October 2026Suunto global product page. The spec data is loaded from the page's embedded product data. Its case-material row says titanium, which differs from the US and APAC pages.

Spec sheet

www.garmin.com/en-US/p/780139/pn/010-02641-011Maker product pagegarmin.com/en-US/p/780139/pn/010-02641-01Read 11 October 2026The specs tab of the US product page holds the full specification list for the 46 mm watch.

us.suunto.com/products/suunto-race-3s-titanium-black1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026Suunto US product page for the Titanium Black SKU SS051645000, read in public HTML. Orchid (SS051647000) and Feather (SS051646000) have their own pages at the same $599 price.

Manual

www8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdf2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdfRead 11 October 2026

cdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdf4Owner's manualcdn.shopify.com/s/files/1/0863/5275/7023/files/Suunto_Race_3S-UG-EN.pdfRead 20 October 2026Suunto Race 3S user guide dated 2026-09-20, 65 pages. Printed page numbers are used below.

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

1 of 1 differ

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

1year5Maker product pagegarmin.com/en-US/legal/consumer-limited-warrantyRead 11 October 2026Garmin consumer limited warranty, US: non-aviation products are free from defects in materials or workmanship for one year from the date of purchase.

2years1Maker product pageus.suunto.com/products/suunto-race-3s-titanium-blackRead 20 October 2026FAQ: the International Limited Warranty covers the watch for two years from purchase and accessories for one year.

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