Bluetooth Chip Dialog DA14580 operating voltage CR 2032 Buttoncell OS support above of iOS 7.0 and Android 4.2 Standby Electric (6.0uA operating voltage 2.7-3.2V Freq Range 2.4-2.483GHz Network Bluetooth 4.0 Operating range 5 to 30M Standby 6 months Color Any color for. Plastic Case Functions Self-Timer, Anti-Lost, Pickproof&Search Unit Size: 30*40*8mm, Net weight: 7.7g http: //www.unuiga.com.cn/