We are offering bluetooth keychain 01.Bluetooth chip dialog da14580 operating voltagecr 2032 buttoncell os support above of ios 7.0 and android 4.2standby electric6.0ua operating voltage 2.7-3.2vfreq range 2.4-2.483ghz network bluetooth 4.0operating range 5 to 30m standby 6 monthscolor any color for.plastic case functions self-timer, anti-lost, pickproof&searchunit size:30*40*8mm, net weight:7.7g