1:Transmission:10M 2:Talking Time:6 Hours 3:Bluetooth 2.1+EDR 4.Handsfree,compatible with all Bluetooth Devices Detailed Product Description Packaging Detail:Blister Outer box with inner Paper BoxDelivery Detail:1~7days 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 quality, ...