Smartband 253*21.7*12.3 mm with Metal Case, TPU Strap, Available in 5 Colours, Water Resistance - IP68, CPU: SYD8811, DISPLAY: 0.96" TFT-LCD display, Single Touch, App: DayBand, SENSORS: Accelerometer, Heartbeat, Light , Battery Capacity 90mAh; Input: DC 5V, Standby battery life: 15 days, Notification of calls (with rejection option) and incoming messages (with text display), Wechat notifications, QQ, WhatsApp, Facebook, Twitter, Heartbeat detection via optical sensor , Blood Oxygen Saturation measurement, Blood Pressure measurement, Step counter, Distance travelled, Calories burned, Sleep monitoring, Multi-Sport mode, Weather forecast display, Manual time tuning option, Connection with GPS of your mobile device.