IOGEAR Kaliber Gaming Saga Surround Sound Gaming Headphones, GHG700 Dolby Pro Logic IIx Virtual Surround Sound for the ultimate gaming, movie or music experience Game mode creates a fully immersive gaming or movie experience whether on a console, computer, smartphone or tablet Music mode brings your music to life by pulling vocals forward and opening up the sound stage Internal amplifier with electronic volume control boosts weak signal sources. Built-in microphone for in-game chat or taking phone calls Internal Lithium Polymer rechargeable battery. Passive mode allows non-amplified operation Ergonomic ear cup design made with breathable protein leather material for maximum comfort Soft-cushioned memory foam headband conforms to head for better fit Pivoting flat-folding hinges allow easier storage. 3.5mm stereo connector