ITEM NAME:M5 Smart Bracelet Men Smartwatch Sports Fitness Tracker Heart Rate Blood Pr C9U1 M5 Smart Bracelet Men Smartwatch Sports Fitness Tracker Heart Rate Blood Pr C9U1 Main functions: Step count, heart rate detection, real-time heart rate monitoring, sleep monitoring, sedentary reminder, mileage, blood oxygen, blood pressure, mobile phone search, calories, weChat, QQ and other tips Text information, intelligent anti-loss, WeChat sports, weather forecast, Multiple switching interface? Application software features: Step, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, mobile search, calories, WeChat, QQ and other text information tips, WeChat sports, synchronized time, detection of a single click health, search function, multi-interface switch, alarm settings, sedentary reminder Message reminder mode, SMS reminder, QQ reminder, WeChat reminder, call reminder, more reminder see APP Support 11 languages: Simplified Chinese Traditional Chinese English French German Italian Japanese Korean Russian Portuguese, Arabic Compatible System: Android4.4 (included) or higher, IOS8.2 included) FLASH memory: 16 MB Type: TFT Screen Size: 0.96 inch Pixel: 160 * 80 IPS Type of battery: lithium polymer Capacity: 90 mAh Charging method: USB dedicated charging cable Waterproof rating: IP67 Charging time: 1.5 H Life time: 5 days of use, 15 days of waiting size:46*20*12MM colour:blue Material:plastic Package Contents: 1 * smart wristband 1 * data line 1 * instruction