ward-winning SRS audio enhancement delivers immersive and accurate 3D surround sound. Great for gaming, these headphones expand the size of the audio image and create a deep, rich bass response. It also restores detail and purity to your audio recordings. They are Altec Lansing Upgrader Series which were created to provide the ultimate in comfort and fit. Flexible and light weight Lexan Headband. Specifications: 3D SURROUND - Expands the size of the audio image and creates a deep, rich bass response Driver - tudio Grade 40mm High Power Neodymium Drivers Input sensitivity - >85 dB / mW Impedance - 32 Ohms Cable - Long 78" (2m) Tangle-free Cloth Cable