Amazfit GTR Specs
General
Watch Operating System    Proprietary OS
Compatible Operating System    Android 5.0 and later
iOS 10.0 and later
Sensors    Accelerometer, Barometer, Compass, Heart Rate, Light Sensor
Connectivity
Connectivity    Bluetooth, NFC
Bluetooth    5.0
GSM 2G    Yes
GSM 3G/3.5G    Yes
4G LTE    Yes
Wi-Fi Standard    Not Specified by Manufacturer
GPS    Yes, with GLONASS
Display
Dial Shape    Round
Display Size    1.39" / 3.5 cm
Dial Type    Digital
Display Technology    OLED
Display Resolution    454 x 454
Pixel Density    326 ppi
Battery
Battery Capacity    410 mAh
Battery Life    Normal Use: Up to 24 days
Battery Charging Time    2 Hours
Charging Method    Magnetic Connector
Physical
Watch Crystal Material    Corning Gorilla Glass 3
Case Materials    Aluminum, Ceramic, Plastic
Water Rating    5 ATM
Band Material    Leather
Band Width    22 mm
Case Dimensions    1.86 x 1.86 x 0.42" / 47.2 x 47.2 x 10.75 mm
Weight    1.3 oz / 36 g (Watch Only)
Packaging Info
Package Weight    0.595 lb
Box Dimensions (LxWxH)    4.7 x 4.5 x 2.3"