Function:- Sealed waterproof design, can be used in the shower or swimming- Touch button, easy view the data from screen- Heart Rate Monitor: Supports real-time monitoring and all day monitoring- Display time and date- Pedomete, Distance measuring, Calories burning measuring, Sleeping monitor.- Swimming: Record your paddling times and the calories you burned- Push Message: SMS / QQ / Wechat / Twitter / Facebook- Missed calls, unread messages display (Android)- Anti-lost, alarm reminder, task reminder (Android)- Alarm Clock: To wake you up with Silent Specification:Display: 0.66 " 64x48Size: 220x20x15mmDisplay: OLED 0.66 "Weight: 30gWaterproof: IP67Watchband: TPUBluetooth: 4.0VGravity Sensor: 3D sensorBattery: Li-battery 150mAhCharger: 5VSystem: Android 4.3 or above versions, IOS 7.0 or aboveApp Name: HPLUS WATCHHeart rate monitor: Green light laserWorking Temperature: -10 degrees Celsius - 45 degrees CelsiusCharge time: 1-2 hoursCertifications and test reports: CE, ROHSApp Name: HPLUS WATCH.Product Dimensions 3.1 x 3.1 x 2 inches Package List1x Swimming/Waterproof Bracelet1x USB charger1x User Manual Note: Our Bracelet is not belong to medical device, so the heart rate monitoring function cannot be as accurate as the medical device monitoring. Please allow for a certain amount of error and data delay.