The Corsair Vengeance 2100 delivers high performance gaming audio without the wires. The powerful 2.4GHz connection gives you up to 40 feet of wireless range and up to 10 hours of battery life. Accurate Dolby 7.1 multichannel audio helps you pinpoint your enemies" location before they see you. Large 50mm drivers offer better bass response and crisp, clear midrange sound and the noise cancelling microphone lets you be heard loud and clear. The closed-back, circumaural ear cups reduce environmental noise for a more immersive gaming experience. Plus the ear cups feature microfiber-covered memory foam ear pads for hours of comfortable gameplay.