Remind: If the bracelet can't be started up,pls charge 5-10min before using it. Specifications: Type:Smart Bracelet App name: fitpro Operation Mode:Touch Operation Power On :Long press function key Charging Time :2 hours Battery Capacity: 90mAh Li-ion Battery  Standby time: 10 - 25 days  Charging Voltage :5V Current :1A-2.1A Descriptions: 1.About 5-10 days standby time. 2.Full-day activity tracking: steps, calories burned, mileage and heart rate. 3.Intelligent reminder: Call reminder, information push, sedentary reminder. 4.More functions: telephone search, remote camera, stopwatch. 5.Continuous Heart Rate Monitor: Continuous automatic heart rate tracking on wrist per second. 6.0.96 inch TFT color touch screen: high-definition screen, easy to read all fitness data. 7.CFFF3ompatible with Android 5.0 and above systems, iOS 8.0 and above systems. 8.Bracelet Push Support Language: Nearly 200 National Languages, push global font. 9.Applied Support Languages: Russian, German, Italian, Japanese, French, Simplified Chinese, Traditional Chinese, Portuguese, Spanish, Arabic, Korean. Package included: 1*Smart  Bracelet 1*User  Manual (It is necessary to read the manul before use,if you do not understand Chinese or English,please contact us.) 1*Charger Notes: 1.Please allow 1-3mm differs due to manual measurement. 2.Due to the different display and different light,the picture may not reflect the actual color of the item. 3.All watches in our store can not be put into the water,just life waterproof.(just like your smart phone)