Amazfit T-Rex 3 Pro
Quick details
Released
September 2025
Dimensions
48mm: 48 x 48 x 14mm; 44mm: 44.8 x 44.8 x 13.2mm
Operating system
Zepp OS 5
Display 48mm (1.5 inch AMOLED); 44mm (1.32 inch AMOLED) AMOLED, 3000 nits
Battery life 48 mm: up to 25 days typical / 38 hours accurate GPS; 44 mm: up to 17 days typical / 26 hours accurate GPS
Water resistance 10 ATM; 45 m freediving; scuba diving
GPS Yes
Sensors Accelerometer, Gyroscope, Barometric altimeter, Compass, Geomagnetic sensor, Ambient light sensor, Optical heart rate, SpO2, Temperature, GPS, Microphone, Speaker
Technical specifications
General
Release date 2025-09
Product type Smartwatch
Physical size 48mm: 48 x 48 x 14mm; 44mm: 44.8 x 44.8 x 13.2mm
Weight 48mm: 52g; 44mm: 46.8g
Material Case: Fiber-reinforced polymer Bezel & Buttons: Grade 5 Titanium
Water resistance 10 ATM; 45 m freediving; scuba diving
Color options 48 mm: Tactical Black, Black Gold; 44 mm: Tactical Black, Black Gold, Arctic Gold
Display type AMOLED
Display size 48mm (1.5 inch AMOLED); 44mm (1.32 inch AMOLED)
Display resolution 48mm: 480 x 480; 44mm: 466 x 466
Display brightness Up to 3,000 nits
Display protection anti-fingerprint coating, Sapphire Glass
Battery Built-in rechargeable battery; 48 mm: 700 mAh (rated value); 44 mm: 500 mAh (rated value)
Battery life 48 mm: up to 25 days typical / 38 hours accurate GPS; 44 mm: up to 17 days typical / 26 hours accurate GPS
Charging Magnetic, 2pin pogo pin charging
Sensors
GNSS type Built-in dual-band GNSS
GPS Yes
GALILEO Yes
GLONASS Yes
QZSS Yes
Beidou Yes
Accelerometer Yes
Gyroscope Yes
Barometric altimeter Yes
Compass Yes
Geomagnetic Yes
Ambient light sensor Yes
Optical heart rate Yes
Electrical heart rate No
SpO2 Yes
Temperature Yes
Galvanic skin response No
Microphone Yes
Speakers Yes
Vibration motor Yes
Health & activity tracking
Steps Yes
Distance Yes
Calories burned Yes
Floors Yes
Sports tracking 180+ sports modes
Sleep Yes
Heart rate Yes
HRV Yes
Stress Yes
Blood oxygen Yes
Respiration rate No
Skin temperature Yes
ECG No
Blood pressure No
Body composition No
Glucose No
Hydration level No
UV exposure No
Calorie intake No
Hyperglycemia risk assessment No
Arterial stiffness detection No
Pulse wave arrhythmia analysis No
Daily smart features
Smartphone compatibility Android and iOS
Operating system at launch Zepp OS 5
Storage 26 GB available for maps, music, apps and data
Bluetooth Yes (5.2)
Wi-Fi Yes (802.11 b/g/n, 2.4 GHz)
NFC / connected pay Yes (Zepp Pay, region-dependent)
UWB No
Cellular No
Smartphone notifications Yes
Bluetooth calling Yes
Smartphone music control Yes
On-board music storage Yes
Voice assistant Zepp Flow
Links
These technical specs are correct to the best of our knowledge at the time of publishing.
