DISPLAY Type AMOLED, 600 nits (peak) Size 1.97 inches Resolution 450 x 390 pixels (~302 ppi density) Always-on display Build Plastic back, aluminum frame Waterproof (5ATM) 50m water resistant PLATFORM OS HyperOS SOUND Loudspeaker Yes Bluetooth 5.3, A2DP, LE Positioning GPS, GLONASS, GALILEO, BDS, QZSS NFC Yes FEATURES Sensors Accelerometer, heart rate, compass, gyro, SpO2 BATTERY Type Li-Po 470 mAh, non-removable