1.Support A2DP, AVRCP; 2.Dual Antenna Reception System; 3.Smart connection; 4.Rechargeable battery system; 5.Built-in Mic. Model: L3 Bluetooth wireless headset Features Support A2DP function ,AVRCP remote control capabilitiesSupport Bluetooth specification V2.1 version, backwards compatible with V1.1, V1.2 version ; Support automatic switching to answer phone-call ,Play,Pause,Forward & backward ...