TE, HD Voice)?Function characteristics:Bluetooth V4.0 version CSR8635Support voice to answer the phone.Supports Bluetooth Headset musicSupports music songSupport the last number redialVoice reporting function.Bluetooth Headset operation voice prompt function.Supports Micro message, vehicle navigation, QQ voice software.Conversation 8-10 hours, 10-12 hours, listening to music, and 150 hours of standby time.Certificates: CE,ROHS,FC,ISOTransmission distance: 10mFrequency Response: 20Hz-20KHzChargi