Specification:Product size:44.8mm x 20.3mm x 1.8mmWeight:23gDisplay Screen:1.06″OLED color touch screenMaterial:PCbluetooth version:4.0Sensor: Heart rate sensor & acceleration sensorBattery:100mAh polymer lithium batteryProduct color:blackWorking time:5-7 daysstandby time:10-12 days.Waterproof:IP67(life waterproof, don’t put it under water)App avaiable Support iOS &Android devicePackage:1 x Fitness bracelet1 x User’s manual1 x Charging clip1 x Usb charging cable,,,,,,,,,,,