... + / -, play / pause, previous/next song l Compatible with most Bluetooth enabled devices, for example mobile phone, PDA, laptops, headset etc l External ... Last number re-dialing supported.l Support A2DP and AVRCP Bluetooth profiles l Comfortable and adjustable headband with overhead designl Low ... 3hours 6.standby time:≥200hours 7.listen music:≥18hours Stylish Wireless Stereo Bluetooth Headset (B-940)