Usage: Personal Model Number: anti-lost 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,without Battery, (Not Included a CR2032 battery) 7. Net Weight: 9 gram 8. Available colors: Random 9. Certificates: CE/ROHS/EPL 10. App Name: iTracing (Free of charge) 11. Connects up to 10 iTag unit 12. App language: English, Chinese, French, Spanish Package:OPP bag