Bluetooth stereo Headset Bluetooth stereo Headset1). Bluetooth version: Bluetooth CSR V2.1 + EDR 2).Support agreement: Headset,HFP,A2DP,AVRCP 3). Music play time:above 6 hours 4). Call time:above 7 hours 5). Standby time:above 150 hours 6.) charging time: 3 hours 7). Battery capacity: 150mA, 3.7 V 8). The valid distance: 10 meters