Bestpriceam Wireless Bluetooth Child Elderly Pet Phone Car Baby Key Anti-Lost/Anti-Theft Seeker GPS Locator Alarm Finder Tracker Camera Remote Shutter & Record Function Blue Anti-Lost alarm tracer function, you don't have to worry about lost your mobile phone anymore Voltage: CR2032 lithium battery,work about six months Bluetooth version: bluetooth 4.0 Transmission distance: 25M Remote control shutter