Specifications: Material: ABS Appearance size: 37*37*6MM Applicable system: for IOS 7.0 above, Android 4.4 above Battery: cr2032 Button Battery ( Not Include) Product colors are: black, white, red, green,blue Note: APP application downloads: Android system in the application treasure download, ios system in the app store download Bluetooth version: Bluetooth 4.0 Working distance: about 75 feet (accessibility) #petGPS #Smart_Bluetooth #Tracker_Alarm