Bluetooth variation: V4.0+EDR Bluetooth mode: Bluetooth/headset/A2DP Radio frequency:2.0402-2.480GHz Transmission degree: Class 2 Supported A2DP:Music play(audio production:35Mw, Play/Pause) Work range:10 meters Charging time: 1 hours Charging cable: USB Micro Cable Talk time: 4 hours Music time: 3 hours Standby time: 120 hours Work current: 15mAh