Logitech G933 Artemis Spectrum and Artemis Spectrum Snow Wireless 7.1 Gaming Headset Stereo USB Mini phone RCA WiredWireless 65.6 ft 39 Ohm 20 Hz 20 kHz Over the head Binaural Circumaural 0.14 Cable White - Office Depot
User manual Logitech G933 Artemis Spectrum (English - 612 pages)
Logitech Announces the G633 & G933 Artemis Spectrum Headsets, First Headsets to Support Both 7.1 Dolby Surround Sound & DTS Headphone:X | High-Def Digest