SADES SA901 Over Ear USB Wired 7.1 Surround Noise Cancelling PC Gaming Headset with Microphone (Black/Blue) PLUG AND PLAY:7.1 USB sound card delivers thrilling stereo surround sound with separately adjustable levels and external sound card. HIGH SOUND QUALITY:Unique structure with retractable Mic.Noise cancelling design,it will be a newly music and games experience. HUAMN NATURAL DESIGN:Reinforced headband provides nine levels of height adjustment for the perfect fit -ENVIRONMENTAL PRODUCT:Human friendly design with unique 4-pieces padded headband and comfortable ear cushions, ensure a comfortable experience with the headset CONVENIENT TO USE:Little smart in-line Remote Control for sound and Mic . The driver of the headset only supports Windows system to install but Apple and other computer system are not supported. 7.1 sound channels is 7.1 simulated sound channels.