The All-New Koss GMR-540-ISO and GMR-545-AIR Gaming Headphones are specifically designed and engineered to create a realistic environment for captivating gaming experiences. Featuring new custom tuned elements, both versions of the GMR Gaming Headphones deliver open, wide-ranging 3D sound for riviting gaming immersion. An ultra lightweight design with an all-new custom fitting sling allows the headphones to be worn for hours of gaming and extended use. The Koss GMR-540-ISO Closed-Back Gaming Headphones are specifically designed and engineered to create an isolated environment for complete gaming immersion while the GMR-545-AIR Open-Back Gaming Headphones are specifically designed and engineered to create a realistic environment for expansive gaming experiences. The over-ear design has the iconic Koss “D-Profile” earcup which mimics the shape of the ear to create the perfect seal and lasting comfort. Both versions also feature a detachable cord design and come equipped with two cords: an 8-foot extended cable with a boom microphone (with separate audio/voice plugs) and a 4-foot standard headphone cable with the Koss 1-touch microphone (with standard 3.5mm plug).