1)Bluetooth version: V4.1+EDR
2)Support profiles: HSP,HFP,A2DP.AVRCP
3)Sound Mode: Stereo
4)Chip: CSR8635
5)Charging time: 1-2 hours
6)Standby time: 200 hours
7)Talk/Playing time: 5 hours/4 hours
8)Operating Distance: in 10 meters
9)Power Source: Built-in Rechargeable Li-ion Battery 55mah