Operating system Mi Fit app Memory storage capacity 4 MB Special features Touchscreen, SPO₂ Monitor, Waterproof, Built-in GPS, Smart notifications, Multiple sports modes, Touch screen, Heart Rate MonitorTouchscreen, SPO₂ Monitor, Waterproof, Built-in GPS, Smart notifications, Multiple sports modes, Touch screen, Heart Rate Monitor Battery capacity 4.7E+2 Milliamp Hours Connectivity technology Bluetooth About this item Ultra large 1.96'' Amoled Display Long battery life BT calling GPS/GLONASS/Galileo/QZSS/Beidou Advance health and workout tracking