Headphones Dell Alienware TACTX Gaming Headphones 0R350P R350P CN-0R350P, 0R350P, R350P / Comes With Retractable Microphone Still In BOX The Alienware TactX Headset gears you up for serious, nonstop gaming sessions. Dell Alienware TactX Gaming Headset: DPN- R352P Includes Microphone No Drivers NeededSpecifications:Headphones:Frequency Response: 16 Hz -28 kHzInput Impedance: 40 OhmSensitivity: SPL @ 1 kHz, 1 Vrms: 110 dBConnector: 3.5mmEar Coupling : CircumauralCord Length: ~10 Feet (~3ft cord + ~7ft extension)Microphone:Frequency Response: 75 Hz -16 kHzsInput Impedance: 2K OhmSensitivity: -38 dBConnector: 3.5mmPick Up Pattern: UnidirectionalSystem Requirements:3.5mm Analog Audio-Out Jacks3.5mm Analog Audio-In Jack (for microphone use)