Dimensions: 47.5mm x 41.1mm x 10.5mm
31.5g (without inbox strap)
Frame: Aluminum alloy frame
Strap Size: 135mm ~ 205mm
Sensors: Heart rate sensor (with blood oxygen sensor) | Accelerometer | Gyroscope | Ambient light sensor | electronic compass
Satellite positioning systems: GPS | Galileo | Glonass | BeiDou | QZSS
Battery Typical use time: 20 days
Capacity: 470mAh
Display: Ultra-large 1.97″ Square AMOLED display
60Hz refresh rate
LTPS 5Hz
Brightness: Up to 600 nits
Other
Built-in GNSS: supported
Speaker: supported
Bluetooth call: supported
5ATM water resistance
Package contents: Redmi Watch 4 / Magnetic charging cable / User manual
