For those that take their fitness to the extreme, the T-Rex Multi-Sport GPS Smartwatch from Amazfit is engineered to stay with you every step of the way. The rugged construction is built for the outdoors and to take on an intense amount of abuse. Meeting multiple guidelines within the MIL-STD-810 certification, the T-Rex can handle a variety of environmental conditions:


  • Rapid temperature changes from -40 to 158°F for up to 2 hours
  • Water depths of up to 164′
  • Up to 96 hours of salt spray
  • Resists humidity for up to 260 hours


While in normal to rough conditions, the T-Rex has the ability to track your fitness and health along the way. It has 14 different sport modes, a built-in GPS, and an optical heart rate sensor. The Sony GPS chip used in the T-Rex supports both GPS and GLONASS constellations, and is made to minimize power consumption. The T-Rex can last up to 20 days on a full charge, and up to 40 hours when using GPS functionality. All of the information the T-Rex provides is displayed on a stunning 1.3″ AMOLED watch face.

Heart Tracking

The built-in heart rate sensor gives you the ability to manually or continuously track your heart health. You can see heart rate interval values and receive a heart rate warning if you exert yourself too much.

14 Sport Modes

Track and automatically record your progress in the following sport and fitness modes: running, treadmill, trail running, walking, elliptical, climbing, hiking, skiing, outdoor cycling, indoor cycling, pool swimming, open water swimming, general fitness

Smart Functions

When paired with an iOS or Android mobile device, you can receive the following information right on your wrist: weather forecasts, incoming calls, SMS, event reminders, call reminders, app notifications, and more.

Additional Features

Sedentary reminder to let you know when you should start moving
Stopwatch and countdown
Do not disturb function
Durable Corning Gorilla Glass 3
Anti-fingerprint coating
Large metal buttons for easy control
3 x Pre-loaded watch faces
Lightweight design that weighs only 2 oz
Watch Operating System Proprietary OS
Compatible Operating System Android 5.0 and later
iOS 10.0 and later
Sensors Accelerometer, Compass, Heart Rate, Light Sensor
Bluetooth 5.0
GSM 2G Yes
GSM 3G/3.5G Yes
4G LTE Yes
Wi-Fi Standard Not Specified by Manufacturer
Dial Shape Round
Display Size 1.3″ / 3.3 cm
Dial Type Digital
Display Technology OLED
Display Resolution 360 x 360
Pixel Density 392 ppi
Battery Type Lithium-ion polymer
Battery Capacity 390 mAh
Battery Life Normal Use: Up to 20 days
GPS: Up to 40 hours
Battery Charging Time 2 Hours
Charging Method Magnetic Connector
Watch Crystal Material Corning Gorilla Glass 3
Case Materials Plastic
Water Rating 5 ATM
Case Dimensions 1.88 x 1.88 x 0.53″ / 47.7 x 47.7 x 13.5 mm
Weight 2 oz / 58 g (Watch and Band)
Packaging Info
Package Weight 0.31
Box Dimensions (LxWxH) 13 x 12.7 x 6.4

Additional information

Weight 0.31 kg
Dimensions 13 × 12.7 × 6.4 cm


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