Amazfit T-Rex 3

Works with: iPhone and Android
Display: AMOLED, 1.5 in
Case sizes: 48.5 mm
Battery: 27 days
GPS battery: 42 hours
Water resistance: 10 ATM
Weight: 68.3 g

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Amazfit T-Rex 3 at a glance

Battery

Weeks between charges

Up to 27 days in smartwatch mode. 42 hours with GPS.
GPS

Built-in GPS

No maps. Runs and rides without your phone.
Display

AMOLED, 1.5 in

1.5 in, up to 2,000 nits and touchscreen.
Health

Heart, sleep and more

Measures blood oxygen and skin temperature.
Phone & smart

iPhone and Android

Music.
Build

10 ATM water rating

68.3 g.

Amazfit T-Rex 3 full specifications

Overview

Brand	Amazfit
Model	T-Rex 3
Series	T-Rex
Colours	Haze Grey

Platform & apps

Works with iPhone and Android phones, running Zepp OS.

Operating system	Zepp OS
Works with	iPhone and Android
RAM	64 MB
Storage	32 GB

Display

A vivid, high-contrast screen that is easy to read indoors and out.

1.5 in, up to 2,000 nits and touchscreen.

Display type	AMOLED
Screen size	1.5 in
Resolution	480 x 480
Pixel density	322 ppi
Peak brightness	2,000 nits
Colour display	Yes
Touchscreen	Yes
Controls	touchscreen

Design & durability

A 48.5 mm case weighing 68.3 g.

Rated 10 ATM: fine for swimming, snorkelling and water sports.

Case sizes	48.5 mm
Case shape	Round
Dimensions	48.5 x 48.5 x 13.8 mm
Thickness	13.8 mm
Weight (case)	68.3 g
Case material	Polymer, Stainless steel
Lens	Corning Gorilla Glass
Band material	silicone
Band width	22 mm
Fits wrists	145-210 mm
Water resistance	10 ATM

Battery

Weeks between charges: up to 27 days in smartwatch mode.

With GPS on, up to 42 hours. Real battery life depends on screen brightness, notifications and workouts.

Battery (smartwatch mode)	27 days
Battery (GPS)	42 hours
All battery modes	Smartwatch: 27 days; GPS: 42 hours; Battery saver: 40 days
Battery capacity	700 mAh
Battery type	Built-in battery
Charging	cradle
Full charge time	180 min

GPS & navigation

Built-in GPS, so you can record runs and rides without your phone.

GPS	Built-in

Health & sensors

Tracks heart rate around the clock, plus blood oxygen and skin temperature.

For sleep, it offers basic sleep tracking.

Sensors	optical HR, SpO2, accelerometer, gyroscope, ambient light, compass, barometer, thermometer, skin temperature
Blood oxygen (SpO2)	Yes
Skin temperature	Yes
Sleep tracking	Basic
Stress tracking	Yes

Training

Built for training, with the metrics serious athletes use.

It adds a triathlon mode.

Triathlon / multisport	Yes

Smart features

Smart extras include music storage.

Notifications	Yes
Speaker	No
Microphone	Yes
Music storage	Yes
Bluetooth	Bluetooth 5.2
Find my phone	Yes

Diving, golf & more

Specialist modes	hunting

Specs compiled from Amazfit's product pages and datasheets, with some identifiers from Open Icecat. Manufacturers revise hardware between versions, so check the version on the box. Spotted an error? Tell us.