Dimensions 47.1mm x 39.6mm x 9.9mm Sensors: Heart rate sensor (with blood oxygen sensor) | Accelerometer | Gyroscope | Ambient light sensor | Electronic compass Satellite positioning systems: GPS | Galileo | Glonass | BeiDou | QZSS Battery Light usage: 18 days Capacity: 470mAh Resolution: 410 × 502 pixels, 332 PPI 1.96" Square AMOLED display Up to 1500nits Built-in GNSS: Supported Water resistance rating: 5ATM Speaker: Supported Bluetooth calling: Supported