Smartwatches / Compare

Amazfit T-Rex 3 Pro vs Garmin epix Pro (Gen 2)

A

Product A: Amazfit

T-Rex 3 Pro

86 of 150 known

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B

Product B: Garmin

epix Pro (Gen 2)

83 of 150 known

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All 150 fields

Every value links to where we found it.

Only differences

AAmazfit T-Rex 3 Pro

BGarmin epix Pro (Gen 2)

General

6 of 10 differ

Series

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

epix1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Garmin writes the family as epix. The page title is Garmin epix Pro Multisport Smartwatch and each edition is named epix Pro (Gen 2).

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

W2549GL5N, W2549GL1N, W2549GL2N, W2444OV1N, W2444OV5N1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026US store variant SKUs: W2549GL5N Tactical Black 44 mm, W2549GL1N Black Gold 44 mm, W2549GL2N Arctic Gold 44 mm, W2444OV1N Tactical Black 48 mm and W2444OV5N Black Gold 48 mm. The German store uses other SKUs.2Maker product pageus.amazfit.com/products/t-rex-3-pro.jsonRead 15 October 2026Store feed variant SKUs by colour and size.

010-02802-01, 010-02802-11, 010-02802-15, 010-02802-20, 010-02803-01, 010-02803-11, 010-02803-21, 010-02803-30, 010-02804-01, 010-02804-11, 010-02804-21, 010-02804-301Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Part numbers of the 12 Pro SKUs on the Garmin UK listing: 010-02802-xx (42 mm), 010-02803-xx (47 mm) and 010-02804-xx (51 mm). The same page also lists the older epix (Gen 2) 010-02582-xx SKUs, which are not included. The manual groups the Pro editions as 010-02802-00, 010-02803-00 and 010-02804-00.

GTIN / EAN

850071618594, 850071618679, 850071618631, 6972596109655, 6972596109549, 6972596109440, 6972596109280, 69725961093581Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026The US store lists 850071618594 for Tactical Black 48 mm, 850071618679 for Black Gold 44 mm and 850071618631 for Arctic Gold 44 mm. The German store EANs are on the German store feed.2Maker product pageus.amazfit.com/products/t-rex-3-pro.jsonRead 15 October 2026Store feed barcodes. Only three of the five options carry a barcode.5Maker product pagede.amazfit.com/products/t-rex-3-pro.jsonRead 15 October 2026German store feed EANs: 6972596109655 Tactical Black 44 mm, 6972596109549 Black Gold 44 mm, 6972596109440 Arctic Gold 44 mm, 6972596109280 Tactical Black 48 mm and 6972596109358 Black Gold 48 mm. These belong to the German store SKUs, so no variant row carries them.

Not available

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

5 September 20257Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026Release dated 5 September 2025 as the new T-Rex 3 Pro.

31 May 20233Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 2026Garmin release dated 31 May 2023, announcing the epix Pro Series in 42, 47 and 51 mm.

Status

Available1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Store lists all five options at 399.99 USD and the add to cart button is active.

Available1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Garmin UK still sells part of the range with an Add to cart button, for example 010-02803-11, 010-02804-11 and 010-02804-21. The Garmin UK category for the page is Previous Models.

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.

$3992Maker product pageus.amazfit.com/products/t-rex-3-pro.jsonRead 15 October 2026Feed lists 399.99 USD for every option. The launch press release says 399.00 USD, which is the stored value.7Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026Available for 399.00 USD on Amazfit.com and Amazfit retail partners. The Amazfit store now lists 399.99 USD. Prices exclude sales tax.

From $899.991Maker product pagegarmin.com/en-GB/p/884198Read 20 October 20263Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 20264Press releasegarmin.com/fr-FR/newsroom/wp-content/uploads/2023/05/CP-Garmin-epix-Pro-31052023.pdfRead 20 October 20265Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026

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.

€399.94Maker product pagede.amazfit.com/products/t-rex-3-proRead 15 October 2026Amazfit Germany lists 399.90 EUR including VAT for both sizes. This is the current store price and it matches the launch price reported by nextpit.11Spec databasenextpit.de/smartwatches/amazfit-t-rex-3-pro-48-mmRead 15 October 2026UVP 399.90 EUR and market start September 2025, listed for the 48 mm model. The 44 mm page lists the same UVP.

From €949.991Maker product pagegarmin.com/en-GB/p/884198Read 20 October 20263Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 20264Press releasegarmin.com/fr-FR/newsroom/wp-content/uploads/2023/05/CP-Garmin-epix-Pro-31052023.pdfRead 20 October 20265Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026

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

Not available

Not available

ColoursiThe maker's own colour names

Tactical Black, Black Gold, Arctic Gold1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Spec table: 48 mm Tactical Black and Black Gold. 44 mm Arctic Gold and Black Gold. The store also sells Tactical Black in 44 mm.

Silver with Whitestone Band, Slate Grey with Black Band, Carbon Grey DLC Titanium with Black Band, Soft Gold with Light Sand Band, Soft Gold with Cream Heathered Nylon Band, Titanium with Whitestone Band, Carbon Grey DLC Titanium with Black Leather Band, Carbon Grey DLC Titanium with Chestnut Leather Band1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Colorway names as printed in the Garmin UK listings, with the UK spelling Grey. Not every colour is sold in every region.

Segment

Outdoor1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Amazfit sells it as a rugged outdoor smartwatch.

Outdoor1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Garmin UK files the page under Outdoor Recreation, Adventure Watches. The title calls it a multisport smartwatch.

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

31 May 20251Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Specs row Security updates until at least (YYYY-MM-DD): 2025-05-31, the same on every edition. Garmin words it as a minimum.

Case

7 of 8 differ

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

44, 48mm1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Two case sizes, 44 mm and 48 mm, sold as one product. Base values below describe the 44 mm case.7Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026Available in two case sizes, 48 mm and 44 mm.

42, 47, 51mm1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Three sizes: 42, 47 and 51 mm, from the Physical size rows and the Overview text.

Case shape

Round1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026The display is round and the product images show a round case with an octagonal bezel.

Round1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Round case and round display, given as a diameter in the Display size rows.

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-3-proRead 15 October 2026Body material: case in fiber-reinforced polymer. Bezel and buttons in Grade 5 titanium. Stored as mixed.

Fibre-reinforced polymer1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Case material row: fibre-reinforced polymer with a steel rear cover (Standard) or titanium rear cover (Sapphire 47 and 51 mm).

Case material (as published)

Fiber-reinforced polymer case with Grade 5 titanium bezel and buttons1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026

Fibre-reinforced polymer case with stainless steel bezel and steel rear cover1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Standard Edition: Overview text 42mm fibre-reinforced polymer case with a steel bezel and rear cover. Bezel material row: stainless steel. The Sapphire 47 and 51 mm rows give a titanium bezel and rear cover. The Sapphire 42 mm row lists a stainless steel or titanium bezel and the Overview text for it says titanium bezel and rear cover.

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

Not available

Steel rear cover1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Case material row of the Standard 42 mm table: with steel rear cover.

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

Height44.8Width44.8Thickness13.2mm(1.8 × 1.8 × 0.5 in)1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Dimensions without heart rate base: 48 mm 48 x 48 x 14 mm and 44 mm 44.8 x 44.8 x 13.2 mm. The thickness leaves out the sensor base.

Height42Width42Thickness14.1mm(1.7 × 1.7 × 0.6 in)1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Physical size row: 42 x 42 x 14.1 mm (42 mm), 47 x 47 x 14.5 mm (47 mm) and 51 x 51 x 14.9 mm (51 mm). The page does not say whether the sensor bump is included. Base is the Standard 42 mm.

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

46.8g(1.7 oz)1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Weight without strap: 48 mm 52 g and 44 mm 46.8 g.

47g(1.7 oz)1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Weight row, case only: Standard 47 g (42 mm), 55 g (47 mm) and 70 g (51 mm). Sapphire 42 mm 47 g with stainless steel and 42 g with titanium. Sapphire 47 mm 47 g and 51 mm 60 g.

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

63g(2.2 oz)1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Weight row, with the silicone band: Standard 63 g (42 mm), 78 g (47 mm) and 98 g (51 mm). Sapphire 42 mm 63 g with stainless steel and 58 g with titanium. Sapphire 47 mm 70 g and 51 mm 88 g.

Durability

5 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-3-proRead 15 October 2026Water-resistance grade 10 ATM. Note 6 says it is rated to ISO 22810:2010 for 100 m and passed SGS testing.

10ATM1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Water rating row: 10 ATM.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Specifications: 10 ATM. Footnote: withstands pressure equivalent to a depth of 100 m.

Water resistance standard

ISO 22810:20101Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Note 6: according to ISO 22810:2010 the watch achieves 10 ATM.

Not available

Dust and water rating

Not available

Not available

Dive rating

EN13319:2000, ISO 6425:2018, GB/T 18828-20221Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Note 2 names EN13319:2000, ISO 6425:2018 and GB/T 18828-2022, each with report numbers per size.

Not available

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-3-proRead 15 October 2026Page text: certified for diving to a depth of 45 m. The comparison table lists 45 m freediving and scuba.

Not available

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

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Note 1: MIL-STD-810H-2019 data comes from report H202505284651-01EN for 48 mm and H202509017818-01EN for 44 mm. The tests are not listed.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Overview text: tested to U.S. military standards for thermal, shock and water resistance.

MIL-STD-810 tests

Not available

thermal, shock, water resistance1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Overview text: thermal, shock and water resistance. The page does not name MIL-STD-810 methods.

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

Min-30°C7Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026The watch can operate in temperatures as low as -30 degrees C. No upper limit is published. The manual limits some functions below -10 degrees C on the watch surface.

Min-20Max45°C2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Specifications: operating and storage temperature range from -20 to 45 C. The USB charging range of 0 to 45 C is not stored.

Display

6 of 14 differ

Display type

OLED1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026

OLED1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Watch display type row: AMOLED.

Display type (as published)

AMOLED1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Display material: AMOLED.

AMOLED1Maker product pagegarmin.com/en-GB/p/884198Read 20 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.

1.32in(3.4 cm)1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Size: 48 mm 1.5 inch and 44 mm 1.32 inch.

1.2in(3 cm)1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Display size row: 1.2 inch (30.4 mm) diameter for 42 mm, 1.3 inch (33 mm) for 47 mm and 1.4 inch (35.56 mm) for 51 mm.5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: display sizes 1.2, 1.3 and 1.4 inch.

Resolution

466 × 466px1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 202648 mm 480 x 480 and 44 mm 466 x 466.

390 × 390px1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Display resolution row: 390 x 390 (42 mm), 416 x 416 (47 mm) and 454 x 454 (51 mm).5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: 390x390, 416x416 and 454x454 pixels.

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

353ppi1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026PPI 322 for 48 mm and 353 for 44 mm as published.

Not available

Display area

Not available

Not available

Touchscreen

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026The manual describes swipe gestures and touch. The spec table row labelled Touchscreen names sapphire glass.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Gestures such as swipe and tap. The touchscreen is switched off during dives.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Touchscreen is listed in the headline features and the Overview text.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Device Overview: touchscreen gestures.

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-3-proRead 15 October 2026Peak brightness up to 3,000 nits. Note 16: not supported in low temperature mode or when battery life is below 30%, and needs automatic brightness.

Not available

Minimum brightness

Not available

Not available

Always-on display

Yes6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Settings > Display > Always On Display, and an Always-on mode toggle in the Control Center.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Battery life rows give always-on figures for smartwatch and GPS modes.

Display cover

Sapphire1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 20267Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026Scratch-resistant sapphire glass screen.

Gorilla Glass1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Lens material row: Corning Gorilla Glass on the Standard Edition, sapphire crystal on the Sapphire Edition.

Display cover (as published)

Sapphire glass1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Screen material: sapphire glass. The features text says scratch-resistant sapphire glass.

Corning Gorilla Glass1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Lens material row, as printed.

Platform

4 of 15 differ

Platform

Proprietary1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Zepp OS, Zepp Health's own operating system. The page links to the Zepp OS technology page.

Proprietary1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Garmin's own watch software with the Connect IQ store. No third-party OS is named.

OS at launch

Zepp OS 53Maker product pageuk.amazfit.com/products/t-rex-3-proRead 15 October 2026The UK comparison table lists Zepp OS 5 for the T-Rex 3 Pro. The US page now lists Zepp OS 6.4Maker product pagede.amazfit.com/products/t-rex-3-proRead 15 October 2026Specs table lists Zepp OS 5.8Spec databasethe5krunner.com/specs/amazfit/t-rex-3-proRead 15 October 2026Operating system Zepp OS 5.

Not available

Software

Not available

Not available

Latest OS

Zepp OS 61Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026The comparison table on the US page lists OS compatibility Zepp OS 6. The UK page still lists Zepp OS 5.10Press 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 rolls out to the T-Rex 3 Pro, with firmware 6.2.104.6 in the screenshot.

Not available

Works with

iOS, Android1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 20266Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Pairs with the Zepp App on Android or iOS.

iOS, Android1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Smartphone compatibility row: iPhone, Android.

Phone requirement

Android 7.0 and above, iOS 15.0 and above, with the Zepp App1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Supported devices: Android 7.0 and above, iOS 15.0 and above. Application: Zepp App.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Manual: the phone must run Android 7.0 or iOS 15.0 or later.

Not available

App store

Yes6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Apps can be installed from the app store in the Zepp App.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Connect IQ downloadable watch faces, data fields and apps, with an on-device Connect IQ Store.

Voice assistants

Zepp Flow1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026AI assistant: Zepp Flow, in select countries and regions.

Not available

Chipset

Not available

Not available

Process

Not available

Not available

CPU cores

Not available

Not available

CPU configuration

Not available

Not available

Max CPU clock

Not available

Not available

GPU

Not available

Not available

Low-power coprocessor

Not available

Not available

Memory

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.

Not available

32GB1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Memory/history row: 32 GB on every edition and size.5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: storage increased to 32 GB on all models.

Health sensors

3 of 8 differ

Heart rate sensor

BioTracker 6.0 PPG biometric sensor (5PD + 2LED)1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Health sensor: BioTracker 6.0 PPG biometric sensor (5PD + 2LED).

Garmin Elevate V5 wrist heart rate monitor1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Sensors row: Garmin Elevate wrist heart rate monitor. The V5 generation comes from the DC Rainmaker review.5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: completely new optical HR sensor, Garmin Elevate V5.

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

Not available

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Headline features list the Garmin ECG App on every edition. Footnote: the ECG app is not available in all regions.5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: the ECG feature came with an October 2023 firmware update. The hardware was in the watch at launch.

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

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 202624 hour and manual blood-oxygen saturation. Not a medical device.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Pulse Ox blood oxygen saturation monitor is listed in Sensors. Footnote: Pulse Ox is not available in all countries.

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-3-proRead 15 October 202624H monitoring lists skin temperature (thermometer).

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Health and Wellness row: Skin temperature YES. Sensors row: Thermometer YES.

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

ECG app: Class IIa medical device under EU MDR (EU) 2017/7451Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Overview footnote 1 on the UK page: the ECG app is a Class IIa medical device under EU MDR (EU) 2017/745, for adults aged 22 and over, not available in all regions. No FDA clearance is stated on this page.

Motion and environment sensors

2 of 9 differ

Accelerometer

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026

Accelerometer range

Not available

Not available

Gyroscope

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026

Barometric altimeter

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Sensors row: Barometric altimeter.

Compass

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Outdoor tools list Compass and the movement sensors include a geomagnetic sensor.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026

Ambient light sensor

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Movement sensors list an ambient light sensor.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026

Depth gauge

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026The comparison table lists scuba and freediving with dive depth. The manual states the maximum measurement depth.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Technical specifications in the diving section state the maximum measurement depth.

Not available

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-3-proRead 15 October 2026See the manual for the 45 m maximum measurement depth.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Maximum measurement depth: 45 m / 147.6 ft. Accuracy follows EN13319.

Not available

Water temperature sensor

Not available

Not available

Health and fitness

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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-3-proRead 15 October 202624 hour heart rate, blood oxygen and stress, abnormal high and low heart rate alerts, sleep heart rate variability, sleep stages including REM, and HybridCharge energy score. Not medical devices.

Continuous heart rate, Heart rate alerts, ECG app, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking, Readiness score, Cycle tracking1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Health and Wellness rows: constant heart rate, abnormal heart rate alerts (high and low), Pulse Ox, HRV status, advanced sleep, all-day stress, Training Readiness and Women's Health in Garmin Connect. ECG app listed in the headline features and subject to regional availability.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Sleep statistics include sleep stages and a sleep score. Cycle tracking is in the Garmin Connect section.

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-3-proRead 15 October 2026Smart recognition of 8 sports movements, VO2 Max, Training Load, recovery, pool and open-water swim, strength training with recognition of 25 movements, interval training, offline maps, turn-by-turn directions, direct return navigation and ski resort maps. The FAQ says Golf Mode is supported with golf course maps.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Navigation section: return to the starting point by straight line or by the original route (Backtrack).

VO2 max, Training load, Recovery advice, Running dynamics, Running power, Pool swim, Open water swim, Strength rep counting, Interval workouts, Route navigation, Turn-by-turn navigation, Trackback, Climb detection, Golf courses, Ski resort maps1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Training, running, swimming and mapping rows: VO2 Max, Training Load, Recovery Time, running dynamics and running power, pool and open water swim metrics, automatic rep counting, interval training, course guidance, TracBack, ClimbPro, preloaded ski resort maps and 43,000 preloaded golf courses. Courses with turn-by-turn directions are an Overview feature card. Some running dynamics need a compatible accessory.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Viewing Route Directions: a list of turn-by-turn directions for 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-3-proRead 15 October 2026Technical specifications row: Sports Modes 187. 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-3-proRead 15 October 2026Comparison table: 10 ATM, 45 m freediving, scuba. The FAQ says it suits freediving and recreational scuba diving.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Diving section: the device supports recreational scuba diving and freediving modes. The default gas type is Air and it must not be used for mixed-gas or technical diving.

Not available

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-3-proRead 15 October 2026Bluetooth peripherals: heart rate belt, running power meter, cycling power meter, cycling speed and cadence sensors and Stryd foot pod. The September 2026 update notes add FTMS indoor bike trainers. Only BLE devices are supported.

Heart rate strap, Power meter, Speed and cadence, Foot pod, Smart trainer1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Rows: heart rate from an external HRM, compatible with Vector and Rally power meters, speed and cadence sensors, foot pod capable and smart trainer control.

Safety

3 of 6 differ

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

Not available

No1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Safety and tracking rows list incident detection during select activities only, so general fall detection is stored as false.

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

Yes2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Safety and Tracking Features, Assistance: sends a message with the name, LiveTrack link and GPS location to emergency contacts through the paired phone. It does not contact emergency services.

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

Not available

Not available

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

Not available

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Safety and tracking row: Live event sharing. LiveTrack is described in the manual and the press release.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Safety and Tracking Features: LiveTrack lets friends and family follow activities in real time. Live Event Sharing also needs a compatible Android phone.3Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 2026Release lists LiveTrack.

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

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Two-color LED flashlight: 200 lux and 300 lux in Boost Mode.7Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026Dual-color LED flashlight with Boost mode, red light and SOS flash.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Headline feature: LED flashlight.3Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 2026Built-in LED flashlight with variable intensities and strobe mode on every size.

Positioning

1 of 3 differ

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

Not available

GPS, GLONASS, Galileo1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Sensors rows: GPS, GLONASS and Galileo, with SatIQ technology. A trusted spec database also lists BeiDou and QZSS, which the maker page does not, so they are not stored.

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

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Positioning: dual-band support and six satellite positioning systems. The page does not name the systems.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Headline feature: Multi-band GPS. SatIQ feature card: multi-band GPS.3Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 2026SatIQ technology and multi-band signal reception with multi-GNSS.5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: multiband GNSS is standard on all editions.

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-3-proRead 15 October 2026Navigation and maps: offline maps supported.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Sapphire Editions have Built-in mapping and Preloaded road and trail maps. Standard Edition has Downloadable cartography support, and DC Rainmaker says the same maps download over Wi-Fi.3Press releasegarmin.com/en-US/newsroom/press-release/outdoor/conquer-every-day-and-every-adventure-with-epix-pro-series-from-garminRead 20 October 2026Preloaded TopoActive maps are available on the Sapphire Editions.

Connectivity

4 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-3-proRead 15 October 2026Connection: Wi-Fi 2.4 GHz, Bluetooth 5.2, BLE.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Connectivity row: Bluetooth, ANT+, Wi-Fi.

Bluetooth version

5.21Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 20264Maker product pagede.amazfit.com/products/t-rex-3-proRead 15 October 2026Specs table: Bluetooth 5.2 (BLE) and 2.4 GHz Wi-Fi.

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-3-proRead 15 October 2026Connection: Wi-Fi 2.4 GHz and OTA update via Wi-Fi.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Connectivity row: Bluetooth, ANT+, Wi-Fi.

Wi-Fi standard

Not available

Not available

Wi-Fi bands

2.4 GHz1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 20264Maker product pagede.amazfit.com/products/t-rex-3-proRead 15 October 2026Specs table: 2.4 GHz Wi-Fi.

Not available

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-3-proRead 15 October 2026Connection lists Wi-Fi 2.4 GHz, Bluetooth 5.2 and BLE only. No cellular radio is listed.

No1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026No cellular connectivity is listed. The Connectivity row names Bluetooth, ANT+ and Wi-Fi only.6Spec databasegadgetsandwearables.com/technical-specs/garmin-epix-pro-gen-2Read 20 October 2026Spec table for the 47 mm: Cellular No. Matches the maker's connectivity row. Its 79 g weight differs from the 78 g on the Garmin page, so only the maker value is stored.

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-3-proRead 15 October 2026The Zepp Pay text says Zepp Pay uses the integrated NFC technology.4Maker product pagede.amazfit.com/products/t-rex-3-proRead 15 October 2026Zepp Pay text names the integrated NFC technology.8Spec databasethe5krunner.com/specs/amazfit/t-rex-3-proRead 15 October 2026Lists NFC for Zepp Pay.

Yes2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Specifications, EU wireless frequencies: 13.56 MHz at -40 dBm maximum is listed for the 42, 47 and 51 mm Pro editions and not for the epix (Gen 2) Standard Edition. Garmin Pay on the Pro editions uses it.

Contactless payments

Yes3Maker product pageuk.amazfit.com/products/t-rex-3-proRead 15 October 2026Zepp Pay binds up to eight bank cards for contactless payment. Note 16 lists 31 supported countries in Europe through Curve and issuer banks. The US page does not mention Zepp Pay.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Garmin Pay contactless payments, subject to supported countries and banks.

Payment services

Zepp Pay3Maker product pageuk.amazfit.com/products/t-rex-3-proRead 15 October 2026Zepp Pay. Curve and participating issuer banks in 31 European countries.

Garmin Pay1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Garmin Pay.

Ultra-wideband

Not available

Not available

Satellite

Not available

Not available

ANT+

No1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Note 15: peripheral connections only support BLE devices. ANT+ is not listed.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Connectivity row: ANT+.

Audio

2 of 4 differ

Speaker

Yes1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Mic and Speaker: Support.7Press releasezepp.com/press-release/amazfit-t-rex-3-pro-smartwatch-launches-featuring-a-rugged-titanium-design-and-integrated-flashlightRead 15 October 2026Built-in speaker and microphone.

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-3-proRead 15 October 2026FAQ: the T-Rex 3 Pro supports Bluetooth phone calls and texts. Calls use the paired phone.

None2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Receiving an Incoming Phone Call: the watch shows the caller and can accept or decline, but to talk to the caller you must use the connected phone.

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-3-proRead 15 October 2026Music storage: Support, with a 26 GB shared storage limit. The manual says local music plays through the speaker or Bluetooth headphones.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Music player: plays .mp3 files stored on the watch through the speaker or Bluetooth headphones.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Music storage YES and Plays and controls watch music YES.

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-3-proRead 15 October 2026Buttons: 4.6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026UP, SELECT, BACK and DOWN. UP and DOWN also work as gesture shortcuts.

52Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Device Overview: LIGHT, UP·MENU, DOWN, START·STOP and BACK·LAP, plus the touchscreen.5Reviewdcrainmaker.com/2023/05/garmin-depth-review-three.htmlRead 20 October 2026Review: three buttons on the left and two on the right with a touchscreen.

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

UP, SELECT, BACK, DOWN6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Upper right SELECT, lower right BACK, plus UP and DOWN.

LIGHT, UP·MENU, DOWN, START·STOP, BACK·LAP2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Device Overview button names.

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

None6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026No crown is described. Controls are four buttons and the touchscreen.

None2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Device Overview lists five buttons and a touchscreen. There is no crown.

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

None6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026No rotating bezel is described.

None2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Device Overview lists no rotating bezel.

Gestures

Not available

Wrist gesture2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Screen settings: Wrist Gesture turns on the screen by raising and turning the arm.

Battery and charging

7 of 13 differ

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

500mAh1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Battery capacity: 48 mm 700 mAh and 44 mm 500 mAh, both rated values.

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 3 Pro

Mode	With solar	Hours (h)
Smartwatch	No	408
Heavy use	No	192
GPS, dual-band	No	26
GPS, power saving	No	51
Extended GPS workout	No	60
Max battery GPS	No	86

Source1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Typical use 25 days (48 mm) and 17 days (44 mm). Heavy use 10 days and 8 days. Accurate GPS mode 38 h and 26 h in the spec table, with heart rate on and dual-frequency, all satellites. Power-saving GPS 74 h and 51 h with single frequency. GPS Long Battery Life 85 h and 60 h and GPS Max Battery Life 116 h and 86 h, both only in Hiking and Climbing sports modes. Low temperature rows are not stored. The comparison table shows 29 h for the 44 mm accurate GPS value. The spec table, feature text and UK page say 26 h, so 26 h is stored. Conditions are in note 8.3Maker product pageuk.amazfit.com/products/t-rex-3-proRead 15 October 2026The UK page gives 26 h for the 44 mm accurate GPS mode, like the US spec table.

BGarmin epix Pro (Gen 2)

Mode	With solar	Hours (h)
Smartwatch	No	240
Always-on	No	96
Low power	No	336
GPS	No	28
GPS, always-on display	No	20
GPS, all systems	No	21
GPS, all systems, always-on display	No	16
GPS, dual-band	No	13
GPS, dual-band, always-on display	No	10
GPS, all systems with music	No	6
Max battery GPS	No	49
Expedition	No	216

Source1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Specs Battery life rows per size. Smartwatch mode and always-on, Battery Saver Watch Mode, GPS Only, All Satellite Systems, All Satellite Systems plus Multi-band (each with always-on figures), All Satellite Systems plus Music, Max Battery GPS and Expedition GPS. Days are stored as hours. The manual is used for the music row of the 51 mm, see the manual note.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Specifications, Battery Information table. Wrist gesture figures are stored as the normal modes and the Always On figures as always-on modes. The music row has 19 h wrist gesture and 17 h always-on for the 51 mm, while the Garmin page prints 17 h. The manual is used, as the maker's document.

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.

408h=CalculatedFrom Claimed battery life

240h=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

96h=CalculatedFrom Claimed battery life

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

Not available

28h=CalculatedFrom Claimed battery life

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

Not available

Not available

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

Not available

Proprietary plug1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Charging method row: Garmin proprietary plug charger.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Charging the Watch: proprietary charging cable that plugs into the charging port, with a USB-A or USB-C end.

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

Magnetic charging head. The packing list says no cable is included and the store FAQ says a USB-C cable is not supplied.1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Packing list: magnetic charging head (no cable). FAQ: Amazfit does not include a USB-C cable.

Not available

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

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

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

2 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.

20mm1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Strap width: 48 mm 22 mm and 44 mm 20 mm.

20mm1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Included QuickFit band width: 20 mm (42 mm), 22 mm (47 mm) and 26 mm (51 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-3-proRead 15 October 2026Comparison table: strap attachment 22 mm quick release and 20 mm quick release.

Yes1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026The included band is a QuickFit band.

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

20 mm quick release on the 44 mm case and 22 mm quick release on the 48 mm case1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Comparison table: strap attachment 22 mm quick release for 48 mm and 20 mm quick release for 44 mm.

QuickFit 20 (42 mm), QuickFit 22 (47 mm), QuickFit 26 (51 mm)1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026QuickFit watch band compatible rows.

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-3-proRead 15 October 2026Strap material: silicone.

Silicone1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Strap material row of the Standard Edition: silicone. Sapphire colourways also come with leather, nylon or other bands, so the base keeps the silicone band of the Standard Edition.

Strap

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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 3 Pro

Wrist (min) (mm)	Wrist (max) (mm)
140	205

Source1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Min and max wrist dimensions: 48 mm 145 to 210 mm and 44 mm 140 to 205 mm. Buckle: classic pin buckle.

BGarmin epix Pro (Gen 2)

Size	Wrist (min) (mm)	Wrist (max) (mm)
Silicone band	108	182
Suede band	108	175
Fabric band	108	189
Metal band	108	180

Source1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026Physical size rows list the wrist circumference range for each band type. These are overall compatible ranges for the band types, not only the supplied band. The 42 mm lists a suede band and the 47 and 51 mm list a leather band.

Regulatory

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FCC ID

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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.

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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.

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0.47W/kg2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026Specifications, EU SAR values: epix Pro (Gen 2) 42 mm 0.47 W/kg limb and 0.21 W/kg torso, 47 mm 0.55 W/kg limb and 0.32 W/kg torso, 51 mm 0.28 W/kg limb and 0.36 W/kg torso. The 42 mm, the smallest case, is stored.

Other certifications

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In the box

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In the box

Smartwatch (including standard strap), Magnetic charging head (no cable), Instruction manual1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Packing list: smartwatch (including standard strap), magnetic charging head (no cable), instruction manual.

epix Pro (Gen 2) Standard Edition | 42 mm, Charging/data cable, Documentation1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026In the Box tab: watch, charging/data cable and documentation. Some Sapphire colourways add a second QuickFit band.

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-3-proRead 15 October 2026Only the charging head is supplied. No mains adapter and no cable.

No1Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026In the Box tab lists a charging/data cable and no power adapter.

Links

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Product page

us.amazfit.com/products/t-rex-3-pro1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026

www.garmin.com/en-GB/p/8841981Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026

Spec sheet

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www.garmin.com/en-GB/p/8841981Maker product pagegarmin.com/en-GB/p/884198Read 20 October 2026The Specs tab sits on the same page and holds one table per edition and size.

Manual

support.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdf6Owner's manualsupport.amazfit.com/en/amazfit_t-rex_3_pro/files/user-manual.pdf.pdfRead 15 October 2026Amazfit T-Rex 3 Pro user manual, global version.

www8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdf2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/epix_(Gen_2)_Series_OM_EN-US.pdfRead 20 October 2026epix (Gen 2) Standard/Pro Series Owner's Manual, version 12, August 2025. It covers the epix (Gen 2) Standard Edition and the three Pro sizes.

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

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Warranty

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

1year1Maker product pageus.amazfit.com/products/t-rex-3-proRead 15 October 2026Store footer says 1 Year Warranty. This is the US store.

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