Specifications:
- Bluetooth version: Bluetooth 4.0, for iPhone 4s / 5 / 5S / 5C, iPad Mini, iPad air, iTouch 5, iPad 3 / 4, for iOS ( 7.0 version and up-grade version ), for Bluetooth 4.0 smart phone ( Android 4.3 version and up-grade version ).
- Working distance: About 75 Feet ( outdoor environment ).
- Battery: CR2032 lithium coin battery, lasts about half a year.
- Material: ABS.