Bluetooth version: Bluetooth V4.1Connectivity Type: wirelessEffective range: 10 meters. Talk times: About 2 hours charging time: about 1 hour standby Time: about 100 hours.Notice: Battery must be fully charged before use for the first time.Description: A. To power on press and hold the answer/end key for about 3 seconds until flashes blue. B. To power off: Press and hold for about 6 seconds, goes off.Function: Connect the Bluetooth; Answer a call; End a call. Packaging list: 1* Headset 1* charging cable 1* manual.