Bluetooth Wireless V4.1 CSR Stereo Handsfree Ear-hook Headset Headphone EarphoneFeature:Color: White Gold、 Wine Red、 BlueNote: Please kindly leave us a PAYPAL NOTE specifying your favorite color、 otherwise we will send it in Random.Size: Approx. 5.3x3.8cm\/ 2.09x1.50!#!amp!*!quot;Bluetooth Version: V4.1Charging Mode: Power adapter output (150mA DC5V)Battery: High performance lithium polymer lithium batteryBluetooth Target: Class 2Support Protocol: Headset\/ Handsfrees\/ A2DP、 AVRCP APT-XDuration: About 3.5 hoursDuration: About 3 hoursStandby Time: About 100 hoursThe bluetooth headset can receive audio from mobile phones、 laptops and other bluetooth device (Dongle: AV general dongle)And PC bluetooth dongle paired connection、 can play a variety of computer audio can also used for voice chat、 to achieve wireless QQ、 MSN、 SkypeOpen the machine - Long press the multi-function key about 3 seconds、 blue lights flash threeThe off machine - Long press the multi-function key about 3 seconds、 red lights flash threeReceive phone calls: Receive the phone to answer the phone key or short press the headset to receive or YES voice answerHang up the phone - Hang up or press the phone hang up or short press the multifunction button to hang upRefused to answer the phone keys by mobile phone or reject long press the multifunction key for about 3 second to reject or !#!amp!*!quot; NO!#!amp!*!quot; speechPackage Included:1 x Stereo Bluetooth Headset1 x Charge Cable2 x Earbuds1 x Manual