Redmi Watch 3

Heart rate sensor (with blood oxygen sensor), accelerometer, gyroscope, geomagnetic sensor Satellite positioning systems: Beidou/GPS/GLONASS/Galileo/QZSS Battery: Typical use time: 12 days Capacity: 289mAh Display: 1.75 inch AMOLED Touch Display Resolution: 390×450 pixel Brightness: up to 600 nits, adjustable Glass with anti-fingerprint coating Microphone: supported Speaker: Supported 5ATM water resistant Bluetooth 5.2 Operating system: Android 6.0 or higher, iOS 12 or higher