Bluetooth Headset Talking Time:4 Hours Bluetooth 2.1+EDR Handsfree,answer/reject call and call the last coming NO. Detailed Product Description Packaging Detail:Blister Outer box with inner Paper BoxDelivery Detail:1~10days CE,ROHS,FCC and BQB ApprovalBluetooth Version 2.1+EDRSupports AVRCP, HSP and HFPSuppor Nokia mobile phone musicMicrophone sensitive: [-45dB(0dB=1V/Pa,1KHz)]Extremely good ...