This Waterproof Smart Bracelet came with many functionalities like health blood pressure test, heart rate monitoring. It is a fitness tracker watch for both Android and iOS - BLUEDescription:Charging time 2 hours - ApproximatelyStandby time: 2 daysFollowing activity all day: steps, calories burned, mileage and heart rate.Automatic sleep monitoring: sleep time and sleep quality.Smart reminder: call reminder, SMS push, sedentary reminder.More features: mobile search, stopwatch. Continuous heart rate monitor: continuous and automatic monitoring of the heart rate on your wrist every second.0.96 inch TFT color touch screen: HD screen for easy reading of all fitness data.Customizable face clockSpecification:Bluetooth version: Bluetooth 4.0Waterproof: Spalsh WaterproofFunctions: time, pedometer, display of incoming calls, heart rate measurement, sleep management, Message.Operating system Compatible: Android, IOSCompatibility: for Android 4.4 and higher systems , for iOS 8.0 and above.Language