Bluetooth version: Bluetooth 4.0 low energy
Compatible Phone: iPhone 4S / 5 / 5S / 5C， iPad Mini， iTouch 5， iPad 3 / 4， iPad Air and Andriod system with Bluetooth
4.0 Smartphone ( Andriod 4.3 version and up-grade version )
Working distance: About 75 Feet ( without barrier )
Suitable for: Wallet， car， kid， pets， bags， suitcase or other belongings
Battery: CR2032 lithium coin battery
Connects up to 10 iTag unit