Note Non medical equipment The health test function is for reference only and cannot be used for medical purposes Specification Model B5 bluetooth Version BT5 3 Compatible OS Support Android 4 4 IOS 9 0 and above Operating Mode Non touch APP Name Nx WearSpecial FeaturesHealth Heart Rate Monitor Blood Oxygen SpO2 Monitor Pressure Detection Sleep Monitor Women s Health Exercise and Record Multiple Sports Modes Calorie Distance Step CountTechnical Parameters Waterproof 5ATM Battery Battery Capacity 18mAh Standby Time About 5 7 days Using Time About 3 5 days Charging Time About 2 3 hours Charging Type Magnetic chargingAppearanceDetails Material Band Material Red Rope Diamond Rope Case Material Zinc Alloy Epoxy Resin Size Dial SIze About 43 9 6 5 6mm Packing List 1 B5 Smart Wristband 1 Charging Cable 1 User ManualTips 1 Light of shoot will affect the color of the products pictures for reference only subject to our available products 2 Please download the app before usage to be compatible perfectly with your phone QA Why doesn t my watch start 1 The watch needs to be connected to the charger for the first use 2 If your watch battery runs out you need to charge it for a while before trying to activate your watch 3 Try to activate your watch by pressing the area below the screen for a long time Why my watch doesn t charge successfully 1 Please make sure your charger is 5V 1A If the current is too high the watch would into the automatic protectio