Screen:1.32 inch IPS screen 360*360 high resolution HD screen (Bright screen under sunshine) Strap:Detachable 22mm strap Standard Functions:Multiple watch faces pushing,Customize watch faces Weather report Accurate dynamic Heart rate detection-VC31 Sensor (Whole-day heart rate monitor) /Blood pressure detection/Blood oxygen detection Timer ,Pedometer,Calorie Consumption,Distance Calculation,Heart rate,Blood pressure,Blood oxygen,Sleep time /quality,On & Off dispalyMultiple sport modes Sleep detection (Sleep time ,Sleep quality) Calls to remind,SMS Reminder,Third-party messaging reminder Multilingual push,Clock alarm,Remote CameraSedentary reminder Female physiological period reminder Languages: English,Chinese,Japanese,German,French,Spanish,Arabic,Russian,Ukrainian,Russian,Portuguese Battery: 360mAh big battery,super long standby time, APP Download Dafit" from Android market,Google play or Apple store Scan the QR code and download Dafit" Supported OS Android system 5.1 version or above ;iOS system 8.0 version or above ;Support bluetooth with 5.0 version; BT version: BLE 5.0 Chipet: Realtek 8762DT with 128MB Standby time: 15-20days Working time: 5-7days