Turtle Beach Call of Duty: MW3 Ear Force Foxtrot Limited Edition Universal Amplified Stereo Gaming Headset Exclusive: Custom military textured finish with MW3 insignia; Call of Duty embossed headband; MW3 downloadable multimedia content, bonus extras, downloadable artwork, discounts on Turtle Beach swag Amplified Audio enhances game sounds for a more immersive experience, while Variable Bass Boost adds depth and realism to the game audio Chat volume automatically increases as the game volume gets louder and the In-line Amplifier gives you quick access to critical gaming audio controls, including chat and game volume Microphone Monitor lets you hear what you're saying while talking Stereo Expander widens the sound field for greater directional perception; USB Powered - No batteries required