Product Details:Component:wristband， chargerMaterial of the band:zinc alloy + TPU (environmental)System requirement1) For android: android 4.3 and above2) For IOS: IOS 7.0 and aboveDisplay:OLED 0.91"Battery capacity:60mABluetooth version:BT4.0color:black， gold， silverPackage details:smart bracelet Package: bracelet * 1 charging cable * 1 manual * 1Features:pedometer，measure distance， Calorie expenditure management， sleeping management， time display，bell reminder(meeting， date， taking medicine， and so on)， phone calls reminding， messege reminding， alarm clock， blutooth remote shutter， Intelligent anti lost.