Smartwatches / Compare

Amazfit T-Rex Ultra 2 vs Suunto Vertical 2

A

Product A: Amazfit

T-Rex Ultra 2

91 of 150 known

Change Amazfit T-Rex Ultra 2

Compare the Suunto Vertical 2 with

Search smartwatches

B

Product B: Suunto

Vertical 2

85 of 150 known

Change Suunto Vertical 2

Compare the Amazfit T-Rex Ultra 2 with

Search smartwatches

All 150 fields

Every value links to where we found it.

Only differences

AAmazfit T-Rex Ultra 2

BSuunto Vertical 2

General

6 of 10 differ

Series

T-Rex1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Amazfit T-Rex family. The page compares it with the T-Rex 3, T-Rex 3 Pro and T-Rex Dual Solar.

Vertical1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Page text names the Vertical family.

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

W2550GL2N2Maker product pageus.amazfit.com/products/t-rex-ultra-2.jsonRead 15 October 2026Store feed variant SKU W2550GL2N for the single option.

SS051204000, SS051205000, SS051206000, SS051207000, SS051208000, SS051209000, OW2443Maker product pageus.suunto.com/products/suunto-vertical-2-all-black.jsRead 15 October 2026Shop variant SKU SS051204000 for All Black. The other five colour pages carry SKUs SS051205000 to SS051209000. OW244 is the radio equipment type in the safety guide.4Maker product pageus.suunto.com/products/suunto-vertical-2-arctic-gray.jsRead 15 October 2026SKU SS051205000, Arctic Gray.5Maker product pageus.suunto.com/products/suunto-vertical-2-canyon.jsRead 15 October 2026SKU SS051206000, Canyon.6Maker product pageus.suunto.com/products/suunto-vertical-2-pine-green.jsRead 15 October 2026SKU SS051207000, Pine Green.7Maker product pageus.suunto.com/products/suunto-vertical-2-titanium-black.jsRead 15 October 2026SKU SS051208000, Titanium Black.8Maker product pageus.suunto.com/products/suunto-vertical-2-titanium-sage.jsRead 15 October 2026SKU SS051209000, Titanium Sage.

GTIN / EAN

850071618860, 69725961097302Maker product pageus.amazfit.com/products/t-rex-ultra-2.jsonRead 15 October 2026US store feed barcode 850071618860. The German store feed carries 6972596109730 under its own SKU TREXU2-C1207005003.

045235103492, 045235103508, 045235103515, 045235103522, 045235103539, 0452351064933Maker product pageus.suunto.com/products/suunto-vertical-2-all-black.jsRead 15 October 2026Manufacturer variant barcode 045235103492 for All Black. Each other colour page gives its own barcode.4Maker product pageus.suunto.com/products/suunto-vertical-2-arctic-gray.jsRead 15 October 2026Barcode 045235103508.5Maker product pageus.suunto.com/products/suunto-vertical-2-canyon.jsRead 15 October 2026Barcode 045235103515.6Maker product pageus.suunto.com/products/suunto-vertical-2-pine-green.jsRead 15 October 2026Barcode 045235103522.7Maker product pageus.suunto.com/products/suunto-vertical-2-titanium-black.jsRead 15 October 2026Barcode 045235103539.8Maker product pageus.suunto.com/products/suunto-vertical-2-titanium-sage.jsRead 15 October 2026Barcode 045235106493.

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

19 February 20266Press releasezepp.com/press-release/amazfit-announces-the-t-rex-ultra-2-a-titanium-gps-watch-engineered-for-the-extremeRead 15 October 2026Press release dated 19 February 2026.

30 September 202511Press releaseprnewswire.com/news-releases/suunto-launches-vertical-2-the-new-generation-of-suuntos-ultimate-adventure-companion-for-the-highest-peaks-and-everyday-adventures-302570842.htmlRead 15 October 2026Suunto release dated 30 September 2025.

Status

Available1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026The store lists the single option at 549.99 USD and the add to cart button is active.

Available3Maker product pageus.suunto.com/products/suunto-vertical-2-all-black.jsRead 15 October 2026The default variant has available:true on every colour page.

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

Not available

Not available

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

Not available

Not available

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

$549.996Press releasezepp.com/press-release/amazfit-announces-the-t-rex-ultra-2-a-titanium-gps-watch-engineered-for-the-extremeRead 15 October 2026549.99 USD in the US. Prices exclude sales tax.

$59911Press releaseprnewswire.com/news-releases/suunto-launches-vertical-2-the-new-generation-of-suuntos-ultimate-adventure-companion-for-the-highest-peaks-and-everyday-adventures-302570842.htmlRead 15 October 2026Stainless steel $599 and titanium $699. US sales tax is not stated.

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.

€549.94Maker product pagede.amazfit.com/products/t-rex-ultra-2.jsonRead 15 October 2026The German store lists 549.90 EUR including VAT. It matches the nextpit list price. The German price is stored as the euro launch price.7Spec databasenextpit.de/smartwatches/amazfit-t-rex-ultra-2Read 15 October 2026UVP 549.90 EUR including VAT.

€59912Press articlerunningindustryalliance.comRead 15 October 2026Reprint of Suunto's launch information: stainless steel 599 EUR (529 GBP) and titanium 699 EUR (629 GBP). The country and tax treatment are not stated. DC Rainmaker also says the stainless steel price rose from 499 EUR to 599 EUR.

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

Not available

US, EU11Press releaseprnewswire.com/news-releases/suunto-launches-vertical-2-the-new-generation-of-suuntos-ultimate-adventure-companion-for-the-highest-peaks-and-everyday-adventures-302570842.htmlRead 15 October 2026US from the release. EU from the euro launch price source.

ColoursiThe maker's own colour names

Black Magma1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Spec table: Black Magma. The store sells one colour and one size.

All Black, Arctic Gray, Canyon, Pine Green, Titanium Black, Titanium Sage1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Six colour pages exist: four stainless steel (All Black, Arctic Gray, Canyon, Pine Green) and two titanium (Titanium Black, Titanium Sage). All Black stainless steel is the base reference.

Segment

Outdoor1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Amazfit sells it as a rugged outdoor GPS smartwatch in its T-Rex range.

Outdoor1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Maker headline: ultimate adventure watch for outdoor expeditions and training.

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.

51mm1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026One case size, 51 mm. Compare table: case diameter 51 mm.

48.6mm1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026The maker states measurements of 48.6 x 48.6 x 13.5 mm and no separate marketed size name. Retailers list it as 49 mm.

Case shape

Round1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026The display is round and the product images show an octagonal bezel around a round dial. Stored as round, like the T-Rex 3 Pro.

Round19Spec databasekakaku.com/item/K0001714952/specRead 15 October 2026Spec database lists the case shape as round. The maker's product photos show a round case.

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

Mixed materials1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Body Material: case in fiber-reinforced polymer. Bezel, buttons and back panel in Grade 5 titanium. Stored as mixed. The marketing text says 51 mm Grade 5 titanium body, which the spec table does not support for the whole case.

Fibre-reinforced polymer1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: case material glass fibre reinforced polyamide, bezel material stainless steel.

Case material (as published)

Case in fiber-reinforced polymer. Bezel, buttons and back panel in Grade 5 titanium1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Technical specifications, Body Material row.

Glass fibre reinforced polyamide case with stainless steel bezel1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026The maker separates the polyamide housing from the stainless steel bezel. The housing is not classified as stainless steel.

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

Grade 5 titanium1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Technical specifications: back panel in Grade 5 titanium. The press release says titanium bezel and case back.

Glass13Maker product pageapac.suunto.com/blogs/blog/suunto-vertical-vs-vertical-2Read 15 October 2026Suunto's comparison article (May 2026) describes a redesigned glass back panel with a 4PD sensor layout.

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

Height51Width51Thickness14.3mm(2 × 2 × 0.6 in)1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Dimensions without heart rate base: 51 x 51 x 14.3 mm. The UK comparison table gives the same figure. The US comparison table lists a thickness of 15.1 mm without the heart rate sensor, which conflicts with the 14.3 mm in the spec table. The spec table value is stored.

Height48.6Width48.6Thickness13.5mm(1.9 × 1.9 × 0.5 in)1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Maker nominal measurements 48.6 x 48.6 x 13.5 mm. Sensor protrusion is not addressed.

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

Not available

Not available

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

89.2g(3.1 oz)1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Weight (with strap): 89.2 g. The standard silicone strap with a pin buckle. The maker does not publish a case-only weight.

87g(3.1 oz)14Press articlehouyhnhnm.jp/en/news/1048767Read 15 October 2026Reprint of Suunto Japan launch information: stainless steel case 87 g including silicone strap, titanium case 74 g including silicone strap. The US spec table gives 87 g without saying whether the strap is included. No case-only weight is published.

Durability

6 of 8 differ

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

10ATM1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Water-resistance grade 10 ATM. Note 8 says it is rated to ISO 22810:2010 for up to 100 m and passed SGS testing.

10ATM1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: water resistance 100 m. Stored as the nominal 10 ATM class of 100 m/10 bar from the safety guide, not as a precise bar-to-atmosphere conversion.10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 6: water resistance 100 m / 328 ft / 10 bar.14Press articlehouyhnhnm.jp/en/news/1048767Read 15 October 2026Reprint states water resistance 10 ATM (100 m).

Water resistance standard

ISO 22810:20101Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Note 8: according to ISO 22810:2010 the watch achieves 10 ATM.

ISO 228109Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 28: waterproof up to 100 m according to ISO 22810.

Dust and water rating

Not available

IPX810Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026English section, printed page 6: IP-class IPX8.

Dive rating

EN13319:2000, ISO 6425:2018, GB/T 18828-20221Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Note 9 names EN13319:2000, ISO 6425:2018 and GB/T 18828-2022 with report numbers. It also says the watch uses the Buhlmann ZHL-16C decompression model.

EN 13319 depth measurement. Recreational diving equipment, not a scuba dive computer.10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed pages 4 and 6: optional diving equipment to 10 m, complying with EN 13319, not a dive computer.

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

45m1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026FAQ: certified for diving and supports depths up to 45 m for freediving and recreational scuba diving.

10m10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed pages 5-6: maximum diving depth 10 m.

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 pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Note 1: MIL-STD-810H-2019 data comes from report H202512228939-01EN. The tested methods are not listed.

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-30°C1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Low Temperature Mode keeps essential functions responsive down to -30 C. It is off by default and switches on when the watch surface is below -10 C (note 10). No upper limit is published.

Min-20Max55°C1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: operating temperature -20 to +55 C.10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 5: operating and storage temperature above sea level -20 to +55 C. Diving operation is 0 to +40 C.

Display

6 of 14 differ

Display type

OLED1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026

LTPO OLED1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table lists the display as LTPO AMOLED.

Display type (as published)

AMOLED1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Display Material: AMOLED.

LTPO AMOLED1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

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

1.5in(3.8 cm)1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Size: 1.5 inch.

1.5in(3.8 cm)1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: display size 1.5 inch, display resolution 466 x 466.

Resolution

480 × 480px1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Resolution 480 x 480.

466 × 466px1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

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

322ppi1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026PPI 322 as published.

Not available

Display area

Not available

Not available

Touchscreen

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026The spec table row labelled Touchscreen names sapphire glass. The manual describes tap and swipe gestures, so touch is confirmed there.5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026Commonly used gestures and buttons: tap and swipe on the screen.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

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 pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Peak brightness up to 3,000 nits. Note 17: not supported in low temperature mode or when battery is below 30%, and needs automatic brightness.

2,000nits15Reviewdcrainmaker.com/2025/09/suunto-vertical-2-in-depth-review-flashlight.htmlRead 15 October 2026Review states the display brightness is 2,000 nits. No window size, ambient light or temperature conditions are given, and this is not a measurement.18Spec databasethe5krunner.com/specs/suunto/vertical-2Read 15 October 2026Spec page also lists 2,000 nits, with no conditions.

Minimum brightness

Not available

Not available

Always-on display

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Battery table lists an AOD mode figure. The manual describes Settings > Display > Always On Display.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Display cover

Sapphire1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026

Sapphire1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Display cover (as published)

Sapphire glass1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Screen material: sapphire glass. The Touchscreen row of the spec table also says sapphire glass.

Sapphire crystal1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Platform

5 of 15 differ

Platform

Proprietary1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Zepp OS, Zepp Health's own operating system.

Proprietary9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed pages 9-10: Suunto's own watch software, updated automatically through the Suunto app. The guide names no Wear OS, watchOS or other third-party platform.

OS at launch

Zepp OS 53Maker product pageuk.amazfit.com/products/t-rex-ultra-2Read 15 October 2026The UK comparison table lists OS Zepp OS 5 for the T-Rex Ultra 2.

Not available

Software

Not available

Not available

Latest OS

Zepp OS 69Press articlegadgetsandwearables.com/2026/07/22/amazfit-t-rex-3-pro-ultra-2-zepp-os-6-updateRead 15 October 2026Article of 22 July 2026: Zepp OS 6 starts rolling out to the T-Rex 3, T-Rex 3 Pro and Ultra 2.

Not available

Works with

iOS, Android1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Supported devices: Android 7.0 and above, iOS 15.0 and above. Application: Zepp App.

iOS, Android9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 10: pairs with the Suunto app from the App Store and Google Play.

Phone requirement

Android 7.0 and above, iOS 15.0 and above, with the Zepp App1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Supported Devices and Application rows.

Not available

App store

Yes5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026App installation: more apps install from the app store in the Zepp App.

Yes9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed pages 16 and 62-63: watch faces, guides and sports apps are installed from the SuuntoPlus Store. Sports apps run as screens during recorded exercise. General smartwatch app support is not claimed.

Voice assistants

Zepp Flow1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026AI assistant: Zepp Flow, in select countries and regions. Note 11 lists the supported languages.

Not available

Chipset

Not available

Ambiq Apollo51018Spec databasethe5krunner.com/specs/suunto/vertical-2Read 15 October 2026Spec page lists the processor as an Ambiq Apollo510 SoC with an Arm Cortex-M55 core. Suunto's release names a new processor and expanded memory without naming the chip. Core count, clocks, process and RAM are not stated.

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.

64GB1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Storage (note 18): Total 64 GB. Available 26.7 GB for maps, music, mini programs, records and watch faces because the system uses the rest. The total is stored.

32GB1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Published outdoor offline map storage is 32 GB. This does not establish music storage or a RAM capacity.

Health sensors

2 of 8 differ

Heart rate sensor

BioTracker 6.0 PPG biometric sensor (5PD + 2LED)1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Sensors, Health: BioTracker 6.0 PPG biometric sensor (5PD + 2LED).

Optical wrist heart rate sensor with 6 LEDs and 4 photodetectors1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: integrated wrist heart rate. LED and photodetector counts are from the5krunner's spec page.18Spec databasethe5krunner.com/specs/suunto/vertical-2Read 15 October 2026Spec page: optical heart rate with 6 LEDs and 4 photodetectors. Suunto's article names a 4PD sensor layout.

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

Not available

Not available

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

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 202624H monitoring and manual blood-oxygen saturation. Not a medical device (note 13).

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 202611Press releaseprnewswire.com/news-releases/suunto-launches-vertical-2-the-new-generation-of-suuntos-ultimate-adventure-companion-for-the-highest-peaks-and-everyday-adventures-302570842.htmlRead 15 October 2026The release says the redesigned optical sensor supports better blood oxygen readings. The product spec table lists blood oxygen.

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

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 202624H monitoring lists skin temperature (thermometer).

Not available

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

Not available

Not available

Body composition sensor

Not available

Not available

Skin conductance (EDA)

Not available

Not available

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

Not available

Not available

Motion and environment sensors

2 of 9 differ

Accelerometer

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026

Yes9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 19: FusedSpeed combines GPS and wrist acceleration sensor readings.

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026

Yes9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 58: the watch has a gyro-assisted, tilt-compensated compass.

Barometric altimeter

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Compass

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Outdoor tools list Compass and the movement sensors include a geomagnetic sensor.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Ambient light sensor

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Sensors, Movement: ambient light sensor.

Not available

Depth gauge

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Dive tracking shows time and depth. The manual states the maximum measurement depth.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: depth meter for snorkeling, 10 m.9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 28: the watch measures depth up to 10 m.

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

45m1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Manual: maximum measurement depth 45 m. The page says dives up to 45 m.5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026Diving Technical Specifications: maximum measurement depth 45 m / 147.6 ft, accuracy per EN13319.

10m1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 20269Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 28: depth measurement up to 10 m, waterproof to 100 m.10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 6: depth display range 0 to 10 m.

Water temperature sensor

Not available

Not available

Health and fitness

5 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, Readiness score1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 202624H heart rate, blood oxygen and stress, abnormal high and low heart rate alerts, sleep heart rate variability, sleep stages including REM, and HybridCharge energy intelligence with BioCharge. The software notes mention a Readiness app. Not a medical device.

Continuous heart rate, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: blood oxygen, HRV measurement, sleep tracking with deep, light and REM, stress and recovery status, daily resource level. These are recreational features, not medical clearances.

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

Automatic workout detection, VO2 max, Training load, Recovery advice, Pool swim, Open water swim, Strength rep counting, Interval workouts, Route navigation, Turn-by-turn navigation, Trackback, Golf courses, Ski resort maps1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Smart recognition of 8 sports movements, VO2 Max (note 12), Training Load, recovery, pool and open-water swim, strength training with recognition of 25 movements, interval training via the watch, offline maps, turn-by-turn directions, direct return navigation, 40,000+ golf course maps and ski resort maps. Ground contact time and vertical amplitude are named in the marketing copy but not stored because the page does not say whether they need an external sensor.5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026Return to the starting point: straight line return or Backtrack along the route already travelled, which is the trackback option.

VO2 max, Training load, Recovery advice, Running power, Pool swim, Open water swim, Interval workouts, Route navigation, Turn-by-turn navigation, Climb detection1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: fitness level (VO2max), training load, training based recovery time, running power, pool and open-water swim, structured intervals, route navigation, climb guidance. The headline says 115+ sport modes and the table says more than 90 are preinstalled. Neither is an exact count.9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 26: Find back gives a direct bearing to the start and is not stored as trackback. Printed page 42: turn-by-turn instructions are set when a route is created in the Suunto app. Printed page 47: climb guidance on a route.

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

1871Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Sports Features row: 187 sports modes. Marketing copy says 180+.

Not available

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

Scuba, single gas, Freedive1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Pro-grade waterproofing: recreational scuba diving and freediving with automatic dive detection. Note 9: Buhlmann ZHL-16C decompression model. The manual says no mixed-gas diving.

Snorkel, Freedive9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed pages 28-29: Snorkeling and Mermaiding sport modes with surface, navigation, dive session and underwater displays. Mermaiding is the breath-hold mode. The watch is not for certified scuba divers.

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 pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Peripherals: heart rate belt, running power meter, Stryd foot pod, cycling power meter, cycling speed and cadence sensors. The September 2026 software notes add FTMS indoor bike trainers and rowing machines. Note 15: only BLE devices are supported.

Heart rate strap, Power meter, Speed and cadence, Foot pod1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: Bluetooth HR belts, Bluetooth foot pods, Bluetooth bike pods with speed and cadence, Bluetooth power meters.

Safety

0 of 6 differ

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

Not available

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.

Not available

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.

Not available

Not available

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

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Flashlight with 4 white levels, 1 green mode and Boost Mode.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Headline lists an integrated LED flashlight.9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 18: an ultra-bright flashlight in addition to the backlight, with red and white light and SOS, Breathing and Alert modes.11Press releaseprnewswire.com/news-releases/suunto-launches-vertical-2-the-new-generation-of-suuntos-ultimate-adventure-companion-for-the-highest-peaks-and-everyday-adventures-302570842.htmlRead 15 October 2026The release describes an integrated LED flashlight in the bezel with red-light mode.15Reviewdcrainmaker.com/2025/09/suunto-vertical-2-in-depth-review-flashlight.htmlRead 15 October 2026Review: dedicated LEDs on the front, two white and one red.

Positioning

1 of 3 differ

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

GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC8Reviewcomputerwoche.de/article/4171180/amazfit-t-rex-ultra-2-im-test-grose-starke-und-robuste-outdoor-smartwatch.htmlRead 15 October 2026The test names the six systems as GPS, GLONASS, Galileo, BeiDou, QZSS and NavIC with dual-band GNSS. The maker states six systems and does not name them. Signal bands are not stored.

GPS, GLONASS, Galileo, QZSS, BeiDou, L1 + L5 GNSS1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table lists GPS, GLONASS, GALILEO, QZSS and BEIDOU, and GNSS frequency support L1 + L5. Other constellations' individual signal bands are not allocated.

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

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Positioning: dual-band positioning and 6 satellite positioning systems with a circularly-polarized GPS antenna.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

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

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Navigation and maps: offline maps supported. Full-colour base maps are preloaded.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Connectivity

5 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 pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Connection: Wi-Fi 2.4 GHz, Bluetooth 5.2, BLE.

Yes1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 202610Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 8: Bluetooth LE at 2402-2480 MHz. No version is stated.

Bluetooth version

5.21Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Connection row: Bluetooth 5.2, BLE.

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.

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Connection: Wi-Fi 2.4 GHz. OTA update via Wi-Fi is supported.

Yes10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 8: the radio list includes WLAN.

Wi-Fi standard

Not available

Wi-Fi 410Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 8: WLAN 802.11 b/g/n at 2402-2480 MHz, which is Wi-Fi 4 in the 2.4 GHz band.

Wi-Fi bands

2.4 GHz1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Connection row lists 2.4 GHz only.

2.4 GHz10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 8: WLAN frequency band 2402-2480 MHz.

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

No1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Connection lists Wi-Fi 2.4 GHz, Bluetooth 5.2 and BLE only. No cellular radio is listed.

No10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026The complete radio list has Bluetooth LE, WLAN and NFC. No cellular radio is listed.

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.

Yes3Maker product pageuk.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Zepp Pay text: integration of NFC technology. The usage scenarios also count NFC card swipes.8Reviewcomputerwoche.de/article/4171180/amazfit-t-rex-ultra-2-im-test-grose-starke-und-robuste-outdoor-smartwatch.htmlRead 15 October 2026The spec table lists NFC (Zepp Pay). In Germany payment works only through the third party Curve.

Yes10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 8: the radio list includes NFC at 13.56 MHz. Reviewers state that there are no NFC payments, so this is hardware support only.

Contactless payments

Yes3Maker product pageuk.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Zepp Pay binds up to eight bank cards for password-protected contactless payment. Note 16: supported by Curve and participating issuer banks in 31 European countries. The US page does not mention Zepp Pay.

No17Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Review: no NFC payments.

Payment services

Zepp Pay3Maker product pageuk.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Zepp Pay, via Curve and participating issuer banks in 31 European countries.

Not available

Ultra-wideband

Not available

Not available

Satellite

Not available

Not available

ANT+

No1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Note 15: peripheral connections only support BLE devices. ANT+ is not listed.

Not available

Audio

3 of 4 differ

Speaker

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Mic and Speaker: Support.

Not available

Microphones

Not available

Not available

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

Phone only1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026FAQ: the watch supports Bluetooth phone calls and texts. Calls use the paired phone.

None17Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Review: no speaker or microphone, so the watch cannot place voice calls. Phone notifications are not voice calls.

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

Yes1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Music Storage: Support. The manual says local mp3 files play through the speaker.

No15Reviewdcrainmaker.com/2025/09/suunto-vertical-2-in-depth-review-flashlight.htmlRead 15 October 2026Review: the watch does not support music on the device.17Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Review: no music storage. Music options are control only.

Controls

3 of 5 differ

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

41Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Buttons: 4.

39Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 8: a touch screen and three buttons (upper, middle, lower). There is no crown.15Reviewdcrainmaker.com/2025/09/suunto-vertical-2-in-depth-review-flashlight.htmlRead 15 October 2026Review: three physical buttons plus the touchscreen.

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

UP, SELECT, BACK, DOWN5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026UP, DOWN, upper right SELECT and lower right BACK. Press and hold UP turns the flashlight on.

Upper button, Middle button, Lower button9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 8 names the upper, middle and lower buttons.

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

None5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026No crown is described. Controls are four buttons and the touchscreen.

None9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026The complete control inventory on printed pages 8-9 has no crown.

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

None5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026No rotating bezel is described.

None9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026The complete control inventory on printed pages 8-9 has no rotating bezel input.

Gestures

Not available

Raise wrist to wake display9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed pages 12-13: Raise to wake activates the display when the wrist is raised.

Battery and charging

6 of 13 differ

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

870mAh1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Battery Capacity: 870 mAh (rated value).

Not available

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

AAmazfit T-Rex Ultra 2

Mode	With solar	Hours (h)
Smartwatch	No	720
Heavy use	No	360
Always-on	No	240
GPS, dual-band	No	50
GPS, power saving	No	90
Max battery GPS	No	177

Source1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Typical use up to 30 days (720 h, note 7 scenario). Heavy use up to 15 days. AOD mode up to 10 days, tested with the heavy-use workload and AOD on. Accurate GPS up to 50 h with heart rate on and dual-frequency, all satellites. Power-saving GPS up to 90 h, single frequency. GPS Max Battery Life 177 h, only in Hiking and Climbing modes with heart rate, Bluetooth and wrist raise off. Not stored: trail running normal 44 h and heavy 30 h, low temperature mode 40 h with GPS and 32 days without, since the schema has no mode for them.

BSuunto Vertical 2

Mode	With solar	Hours (h)
Smartwatch	No	480
Time only	No	960
GPS, dual-band	No	65
GPS, dual-band, always-on display	No	60
GPS, all systems	No	75
GPS, all systems, always-on display	No	70
GPS, power saving	No	110
Max battery GPS	No	250

Source1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Current US spec table. Smartwatch mode up to 20 days (daily heart rate on, display wakes on wrist raise, no training). Standby time mode only up to 40 days. The page text also gives 30 days with daily heart rate off and wrist-raise display, a different condition that is not stored. Training with all-systems GNSS and multi-band up to 65 h (60 h with AOD). All-systems with single-band up to 75 h (70 h with AOD). The battery-mode promises are listed as 65 h, 75 h, 110 h and 250 h in the order of the four predefined modes Performance, Endurance, Ultra and Tour. Tour is named at up to 250 h with lower GPS accuracy and heart rate off. The 110 h figure is mapped to Ultra by that order, since the mode name is not printed next to it. Days are converted exactly to hours. All are non-solar maker estimates.

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.

720h=CalculatedFrom Claimed battery life

480h=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.

240h=CalculatedFrom Claimed battery life

Not available

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

Not available

Not available

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

No1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Compare table: solar charging not supported.

No15Reviewdcrainmaker.com/2025/09/suunto-vertical-2-in-depth-review-flashlight.htmlRead 15 October 2026Review compares solar battery life only for the original Vertical, and the Vertical 2 uses AMOLED without solar.17Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Review: the Vertical 2 replaces the original Vertical's solar panel with an AMOLED screen.

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

Magnetic pins9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Printed page 6: the USB cable's device connector has a strong magnet. The safety guide names charger pins on the watch. The watch end is a magnetic cable on pins, not Qi.

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

Magnetic charging head. The box has a charging base that works with USB Type-C but no cable. The store FAQ says a USB-C cable is not supplied.1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Packing list: magnetic charging head (no cable). What's in the Box: charging base (USB Type-C compatible) but no cable. FAQ: no USB-C cable included.

Use the supplied USB charging cable, which has a USB-C connector and a magnetic watch end. The safety guide lists USB 5 V DC and 1 A charging and recommends charging at 0 to 45 C.10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed pages 6 and 5: battery charging USB 5 V DC, 1 A, and recommended charging temperature 0 to +45 C. The 3.87 V battery voltage is stated but no capacity.13Maker product pageapac.suunto.com/blogs/blog/suunto-vertical-vs-vertical-2Read 15 October 2026The same article says Vertical 2 uses a USB-C connector and a stronger magnetic attachment on the charging cable.

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

Not available

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

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.

Not available

Not available

Measured

2 of 4 differ

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

Not available

Not available

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

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.

AAmazfit T-Rex Ultra 2

Not available

BSuunto Vertical 2

Test	Hours (h)
GPS activity	66

Source16Measurementoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Measured 66 hours of continuous GPS use in All Systems mode on the stainless steel model. GNSS bands, display setting and firmware are not stated. DC Rainmaker's ultra-use run burned about 2 percent an hour with navigation and AOD, which is a projection and is not stored.

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

72min16Measurementoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Review says charging from empty to full takes approximately 72 minutes. The comparison table shows 72 min. Charger power and case size beyond the stainless steel model are not stated.

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.

26mm1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Strap width 26 mm.

22mm1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 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 pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Compare table: strap attachment 26 mm quick release.

Yes17Reviewoutdoorgearlab.com/reviews/camping-and-hiking/gps-watch/suunto-vertical-2Read 15 October 2026Comparison table: tools required to change the band is No. Review: swapping the strap is simple.

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

26 mm quick release1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Compare table: strap attachment 26 mm quick release.

Not available

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

Silicone1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Strap materials: silicone. Buckle: classic pin buckle.

Silicone1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Strap

Not available

Not available

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

AAmazfit T-Rex Ultra 2

Wrist (min) (mm)	Wrist (max) (mm)
145	215

Source1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Min. and max. wrist dimensions: 145-215 mm.

BSuunto Vertical 2

Size	Wrist (min) (mm)	Wrist (max) (mm)
Supplied silicone strap	125	175

Source1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: wrist sizes 125-175 mm for the supplied silicone strap.

Regulatory

2 of 3 differ

FCC ID

Not available

Not available

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

Not available

0.026W/kg10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed page 9: FCC highest reported wrist SAR 0.026 W/kg at 0 mm with a non-metal accessory. The EU section gives no SAR value.

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

CE (RED 2014/53/EU), UK Radio Equipment Regulations 2017, FCC Part 15, ISED Canada (RSS-102), EN 13319 (depth measurement)10Maker spec sheet (PDF)ns.suunto.com/Manuals/Suunto_Vertical_2/Saftey_and_Regulatory/Suunto_Vertical_2_Safety_Regulatory_Information.pdfRead 15 October 2026Printed pages 7-9: CE radio equipment type OW244 under 2014/53/EU, UK Radio Equipment Regulations 2017, FCC Part 15, ISED Canada RSS-102, and EN 13319 depth measurement.

In the box

1 of 2 differ

In the box

Smartwatch (including standard strap), Magnetic charging head (no cable), Instruction manual1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Packing list verbatim.

Suunto Vertical 2, Charging cable, Printed user documentation1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026Spec table: Suunto Vertical 2, charging cable, printed user documentation.

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

No1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026The packing list has a charging head and no USB cable or power adapter.

No1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026The complete contents list has no mains or USB power adapter.

Links

Not compared

Product page

us.amazfit.com/products/t-rex-ultra-21Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026

us.suunto.com/products/suunto-vertical-2-all-black1Maker product pageus.suunto.com/products/suunto-vertical-2-all-blackRead 15 October 2026

Spec sheet

Not available

Not available

Manual

support.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdf5Owner's manualsupport.amazfit.com/en/amazfit_t-rex_ultra_2/files/user-manual.pdf.pdfRead 15 October 2026Amazfit T-Rex Ultra 2 user manual, global version.

ns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdf9Owner's manualns.suunto.com/Manuals/Suunto_Vertical_2/Userguides/Suunto_Vertical_2_UserGuide_EN.pdfRead 15 October 2026Suunto Vertical 2 User Guide dated 2025-09-21. The CE section on printed page 65 names radio type OW222, which differs from OW244 in the safety guide. OW222 is the original Vertical's type, so it is not stored.

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.

1year1Maker product pageus.amazfit.com/products/t-rex-ultra-2Read 15 October 2026Store footer says 1 Year Warranty. This is the US store.

2years20Maker product pageus.suunto.com/pages/sports-watches-dive-computers-precision-instruments-and-field-compassesRead 15 October 2026Current international limited warranty on the US site: sports watches have 2 years for the product body and integrated functional parts. Optional Seel coverage and statutory rights are not counted.

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