Amazfit T-Rex Price in USA is from $132 to $140.
mAh: 390mAh LiPo (Minimum value)
Non Removable: Yes
Charging Method: Magnetic, 2pin pogo pin charging
Theoretical Charging Time: Magnetic, 2pin pogo pin charging
Daily Use Mode: 20 days Heart rate monitoring always on, sleep monitoring; GPS turned on for 13 minutes a day, 150 messages pushed daily which activate screen, wrist raised 30 times which activate screen, 5 minutes of other operations.
Basic watch mode: 66 days Bluetooth connection to phone turned off, heart rate monitoring and other functions, screen activated by wrist tilt 100 times a day.
GPS continuous working time: 20 hours GPS activated to track exercise and monitor heart rate.
BioTrackerTM PPG Bio-Tracking Optical Sensor
3-axis acceleration sensor
Ambient light sensor
Screen size (inches): 1.3-inches
Touchscreen: AMOLED Display
Resolution: 360 x 360 pixels
Protection: Corning Gorilla Glass 3 + anti-fingerprint coating
Waterproofing: 5ATM, supports swimming
GPS: Positioning: GPS + GLONASS
Bluetooth: Bluetooth 5.0/BLE
Dimensions: 47.7 X 47.7 X 13.5 mm
Weight: 58g (with strap)
Colors: Gun Gray, Army Green, Khaki, Rock Black
Build: Polymer materials
Supported Devices: Android 5.0 or iOS 10.0 and above