Specifications:
Material: ABS
Appearance size: 37*37*6MM
Applicable system: for IOS 7.0 above, Android 4.4 above
Battery: cr2032 Button Battery
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)