Condition��100% Brand New and High Quality Colors:As the picture showsSize:125 mm x137 mm x58.5 mm/4.91"*5.38"*2.30"(1cm=0.393inch)Frequency: 2.402~2.408GHz ISM bandPackage includes: 1 PC Wireless Blutooth EaephoneNew STEREO headphonesBluetooth HeadsetPortable design for sportsWill Allow you to answer the phone any-timeAllows you enjoy music or answer the phone with MIC Control of play/pause， volume up and volume downBuilt-in Microphone， answer functionBuilt-in rechargeable lithium battery， charge from any USB portOperating Instructions: 1.The position of buttons: Face to the side with "Bluetooth" symbol， the left button is BACK/ VOL+， the centre button is Play/ Pause， and the right button is NEXT/ VOL-2.Turn on: Hold Play/ Pause key for one sec， then the On/Off light will flash quickly， which means your headset is ON.3.Turn off: Hold Play/ Pause key for three seconds， then the On/Off light will flash between blue and red lights quickly for twice and turn into dark， which means your headset has been turned off4.VOL up: Hold BACK key， then the volume will be turned up (Please note that you must press the key and hold it)5.VOL down: Hold NEXT key， then the volume will be turned down (Please note that you must press the key and hold it)6.Call-in mode: Short press Play/ Pause key to answer a call. Hold Play/ Pause key for three seconds to reject a call