Features: 1. Promote the on-line community experience of the X-box Live of the unprecedented in history,let you draw up the strategy with member of team,the interference opponent or while play favorite game with the friend chat. 2. You can make serve to record for friend or family and stay the speech message through the free X-box Live letter,can also replace telephone and good friend contact. 3. Open loudly or adjust the small voice,make experience personally the most vigorous game career to make possible. font face="Arial, Helvetica, sans-serif" size="3"Instruction: 1. The microphone strengthen the function and can carry on regulate,obtain the best sound quality. 2. The supplementary volume control and muting switches allow the customer to regulate the headphones volume or cut over the mute appearance. 3. The microphone of lowers the speech control that the noise function promotes the game to respond to and provide the pure speech exchnges. 4. Reducing in weight of,the wear type design brings the more comfortable usage experience. 5. The ear Michael with put X-box 360 hand handles or the X-box lead-in hand handles of X-box very easily and directly. size="3">Frequency range:20-20,000Hz Sensitivity:54±5% Impedance:32Ohm Cable length:1.5~1.8m Maximum ower inut:50~100mW Jack:2.5mm