Dimensions47.5mm x 41.1mm x 10.5mm*Height, width and thickness dimensions exclude the strap and protrusions31.5g (without inbox strap) FrameAluminum alloy frame StrapObsidian Black: TPU strapsize: 135mm ~ 205mmSilver Gray: TPU strapsize: 135mm ~ 205mm SensorsHeart rate sensor (with blood oxygen sensor) | Accelerometer | Gyroscope | Ambient light sensor | electronic compass Satellite positioning systemsGPS | Galileo | Glonass | BeiDou | QZSS BatteryTypical use time: 20 daysCapacity: 470mAh DisplayUltra-large 1.97
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Supported Systems--------- Xiaomi HyperOS, Android 8.0 or iOS 12.0 and above. Bluetooth--------- Bluetooth™ 5.3. Screen Resolution--------- 390 × 450,
Xiaomi Redmi Watch 4 Smartwatch 1.97'' AMOLED Support Bluetooth Voice Call
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