Features:

Single Track.Portable behind-the-head wearing design, convenient for sports.Allow you answer or reject phone calls anytime and anywhere.Built in Microphone for Handsfree Cell Phone use or chatting on QQ, MSN.Built-in lithium battery (charged via USB).Note:Compatible with most

Features:

Single Track.Portable behind-the-head wearing design, convenient for sports.Allow you answer or reject phone calls anytime and anywhere.Built in Microphone for Handsfree Cell Phone use or chatting on QQ, MSN.Built-in lithium battery (charged via USB).Note:Compatible with most bluetooth enabled cellphones when used to answer or reject the phone calls but only compatible with Nokia devices of Symbian system when listen to music!Bluetooth adapter and VT BlueSoleil software are needed if you want to connect it to your computer for chatting on QQ, MSN.  Usage:1, Turn on the device.2, Long press Bluetooth Key until red and blue light flash alternately.3, Turn on your bluetooth mobile phone, search nearby devices and then find the right one to do pairing.4, When prompted, please input the default pairing password -0000.Specifications:Bluetoooth version:Version 2.0Protocol: HFP, HSP

Frequency: 2.4 - 2.48GHzSupport format: MP3 WMATalk time: Up to 4 HoursCharge time: 2 hoursPower source: Built-in Li-ion Battery (USB  Charging)System requirement: Windows 98 or above

Material: PCItem color:BlueItem size: 15 * 13cm/ 5.9 * 5.1inItem weight: 33g/ 1.2ozPackage size: 19.5 * 16.5 * 7cm/ 7.7 * 6.5 * 2.8inPackage weight: 85g/ 3oz

Package list:1 * Bluetooth Headset1 * USB cable