Specification:  Bluetooth Version: BT 4.0 or above.  Compatible OS: Android 4.0 or above , iOS 7.0 or above.  Operating Mode: Full Touch.  APP Name: DaFit.  App Language: English, Portuguese, Spanish, French, German, Italian, Ukrainian, Russian, Japanese, Korean, Thai, Arabic, Simplified Chinese, Traditional Chinese.  Waterproof: IP67.  Heart Rate Monitor: Support.  Blood Pressure Monitor: Support.  Blood Oxygen Monitor: Support.  Sleep Monitor: Support.  Multi-sport Modes: Support.  Other Functions: Support Alarm,Calender,Sedentary reminder,Camera remote control,Anti-lost.  Sensor: G-sensor, Heart Rate Sensor.  Screen: Size:1.3inch.  Type:TFT.  Resolution: 240*240 pixels.  Battery: Battery Capacity: 200mAh.  Standby Time: About 20 days.  Using time: About 10 days.  Charging Time: About 2 hours.  Charging Type: Magnetic charging.  Band: Material: Silica Gel Strap.  Length: About 226mm.  Width: About 20mm.  Product weight: 55g.     Package:  1* CF98 Smart Bracelet.  1*Charging Cable.  1*User Manual (English Version)