Amazfit T-Rex 3: specs, who it fits and compatible phones

Amazfit T-Rex 3 is a sport watch released in 2024 that works with iPhone and Android. It lists Dual-band GNSS + maps, 10ATM and Gorilla Glass.

Specifications

Release year	2024
Case size	48.5 mm
Display	AMOLED
Brightness	2000 nits
Battery as listed	Up to 27 days in regular mode · up to 40 days in saver mode
Water rating	10ATM
Glass	Gorilla Glass
Case material	Stainless bezel, polymer frame
GPS type	Dual-band GNSS + maps
Offline maps	Yes
Operating system	Zepp OS
Works with	iPhone and Android
Connection	None
Plan needed	None
Health sensors	SpO2, Heart rate, Skin temperature
Safety features	SOS

Who it fits

Works with iPhone and Android.
Lists dual-band GPS and offline maps, which suits running and hiking.
Lists a battery above the median of 43 listed sport watch models.

How it compares

Closest models from Amazfit

Model	Release year	Case size	Battery as listed	Water rating	GPS type	Works with
Amazfit T-Rex 3 Pro	2025	48 mm	25 days (approx.)	10ATM	Dual-band GNSS + maps	iOS and Android
Amazfit T-Rex Ultra 2	2026	48 mm	Up to 30 days · 50+ GPS hours	10ATM	Dual-band GNSS + maps	iOS and Android
Amazfit T-Rex Dual Solar	2026	51.4 mm	Up to 25 days · 34 with sun	10ATM	Dual-band GNSS + maps	iOS and Android

Closest models from other brands

Model	Release year	Case size	Battery as listed	Water rating	GPS type	Works with
Polar Grit X2 Pro	2024	48.6 mm	10 days · 43 GPS hours (approx.)	10ATM	Dual-band GNSS + maps	iOS and Android
COROS Vertix 2S	2024	50.3 mm	40 days · 118 GPS hours (approx.)	10ATM	Dual-band GNSS + maps	iOS and Android
COROS PACE Pro	2024	46 mm	Up to 20 days · 38 GPS hours	5ATM	Dual-band GNSS + maps	iOS and Android

Compared with Amazfit T-Rex 3 Pro, Amazfit T-Rex 3 lists an older release year (2024 against 2025), a dimmer listed display (2000 nits against 3000) and Stainless bezel, polymer frame case material, where Amazfit T-Rex 3 Pro lists Titanium.

Compared with Amazfit T-Rex Ultra 2, Amazfit T-Rex 3 lists an older release year (2024 against 2026), Stainless bezel, polymer frame case material, where Amazfit T-Rex Ultra 2 lists Grade-5 titanium bezel and back and Gorilla Glass glass, where Amazfit T-Rex Ultra 2 lists Sapphire.

Compared with Amazfit T-Rex Dual Solar, Amazfit T-Rex 3 lists an older release year (2024 against 2026), a dimmer listed display (2000 nits against 3000) and Stainless bezel, polymer frame case material, where Amazfit T-Rex Dual Solar lists Grade 5 titanium.

Compared with Polar Grit X2 Pro, Amazfit T-Rex 3 lists Stainless bezel, polymer frame case material, where Polar Grit X2 Pro lists Titanium and Gorilla Glass glass, where Polar Grit X2 Pro lists Sapphire.

Compared with COROS Vertix 2S, Amazfit T-Rex 3 lists Stainless bezel, polymer frame case material, where COROS Vertix 2S lists Titanium and Gorilla Glass glass, where COROS Vertix 2S lists Sapphire.

Compared with COROS PACE Pro, Amazfit T-Rex 3 lists a higher ATM rating (10 against 5), a brighter listed display (2000 nits against 1500) and Stainless bezel, polymer frame case material, where COROS PACE Pro lists Fiber-reinforced polymer.

Only values listed exactly are compared.

Position in the catalog

Its case size of 48.5 mm is larger than 57% of 30 sport watches with a single exact size. Its exact water rating of 10ATM is above 43% of 47 sport watches with a single exact ATM rating. It was released in 2024. Among 52 sport watches with an exact release year, 31% were released in 2024 or earlier and 92% were released in 2024 or later.

Phone compatibility and plan

No plan is listed as needed.

Sensors and features are listed as the maker names them and are not medical measurements.

Related guides and lists

Last verified September 26, 2026

Features change with updates. Check the maker's current details. See our methodology