1 Bluetooth version: Bluetooth 4.0 Low Energy
2 Compatible Phone: iPhone4S/5/5S/5C, iPad Mini, iTouch 5, iPad 3/4, iPad Air and Andriod system with Bluetooth
3 4.0 Smartphone(Andriod 4.3 version and up-grade version)
4 Working distance: About 75 Feet (without barrier )
5 Suitable for: Wallet, Car, Kid, Pets, Bags,Suitcase or other belongings.
6 Battery : CR2032 Lithium Coin Battery (Not Included a CR2032 battery)