Major function:Custom dial, female physiological cycle, off screen and on, weather forecast, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, search, calories, Bluetooth, message push Software features:Massive dial download, upload photos, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, mobile search, calories, Bluetooth, information, wechat, QQ and so on. Specification Display :1.3 inch HD TFT round screen 240* 240px Key mode: Physical button + full touch operation Bluetooth : Bluetooth 4.0 Waterproof level: IP68 dustproof and waterproof Heart rate sensor : Silan SC730 Battery: 200mAh Battery: Silica gel System: lOS8.0 or above and Android5.0 or above