Greetings ! Excellent Used Condition *Tested* The information below is from the Sennheiser website. Please ask any questions before purchase. Consignment item SENNHEISER PC163D 3.5mm/ USB Connector Supra-aural Headset ModelBrandSENNHEISER ModelPC163D HeadphoneHeadphone Frequency Response15Hz-23KHz Headphone Input Impedance32 ohm Connector3.5mm/ USB Ear CouplingSupra-aural Cord Length6.5 ft. Weight200 g MicrophoneMicrophone Impedance~2K ohm Microphone Frequency Response80Hz-15KHz FeaturesFeaturesMore spacious sound field - 7.1 channel surround sound powered by Dolby Headphone to accurately pinpoint noises from all directions in the gamescape Superb Sennheiser stereo sound - Sennheiser quality speakers deliver great acoustic performance from games, music, movies and internet calls Gaming with a cool head - the open design ensures a continuous airflow and lets you be in touch with the action around you Lightweight and comfortable forget youre even wearing a headset, however long you play Noise canceling clarity the microphone reduces ambient noise for crystal-clear conversations without the need to shout Integrated volume control & adjustable boom the volume control with microphone mute switch is integrated on the cord and you can adjust the microphone boom as you like Peace of mind - thanks to the 2-year international warranty Additional InformationDate First AvailableNovember 04, 2010 15Hz-23KHz 3.5mm/ USB Connector 6.5 ft. Cord Length Overview Developed together with our top-ranking eSport team mTw, the PC 163D uses state-of-the-art Sennheiser audio and virtualization technology from Dolby Headphone to create 7.1-channel surround virtualization. The heightened realism and atmosphere of the PC 163D take 3D games to a whole new level. Sennheiser speakers team up with virtualization technology from Dolby Headphone to recreate soundscapes with more detail and depth. So you can better pinpoint off-screen obstacles, hear footsteps behind a wall or the opponent coming from aside. When virtual soundscapes are this realistic, there can only be one result: full-on intensity that sharpens reactions and drives up the score. But this headset gives you more than spacious 3D gaming. It also has all the features you need for perfect communication, inside and outside the virtual world. The Sennheiser speakers great acoustics are matched by Sennheiser Communications noise canceling microphone for clear chat. The adjustable boom and in-line volume control with microphone mute switch are also super convenient. The PC 163D features an open design, so even when youre enjoying the most intense game of your life, you wont get cut off from your surroundings. And the continuous airflow to your ears ensures you keep a cool head, no matter how heated the action. More Spacious Sound Field Dolby 7.1 Headphone channel surround sound virtualization to accurately pinpoint noises from all directions in the gamescape. Superb Sennheiser Stereo Sound Sennheiser quality speakers deliver great acoustic performance from games, music, movies and internet calls. Gaming with a cool head The open design ensures a continuous airflow and lets you be in touch with the action around you. Lightweight and Comfortable Forget youre even wearing a headset, however long you play. Noise Canceling Clarity The microphone reduces ambient noise for crystal-clear conversations without the need to shout. Integrated Volume Control & Adjustable Boom The volume control with microphone mute switch is integrated on the cord and you can adjust the microphone boom as you like.