The M660 Gaming headset features M.O.C.I. (Mycelium of Carbon IT). Made of advanced biotechnology with bred nano mycelium and carbon fiber to offer the metal rigidity with paper-like thinness. This optimum diaphragm dome is made to create high-resolution and precise notes for highs and mids that unfolds sound to its full potential. The M.O.C.I. design helps to decrease headache effects after a long gaming session.