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 7 Standby time: 6 month 8 Net Weight: 9 gram 9 Available colors: Black/White/Green/Red 10 Certificates: CE/ROHS/EPL 11 App Name: eTracing (Free of charge) 12 Connects up to 10 iTag unit 13 App language: English, Chinese, French, Spanish 14 Package: No retail package.