product description: * 7.1 usb sound card delivers thrilling surround sound with separately adjustable levels. * unique 4-pieces of padded headband and comfortable ear cushions guarantees hours of gaming comfort. * 40mm diameter hifi speaker has high sensitivity and accurate sound reduction, letting you receive any detail of sound and experience a realistic game battlefield. you can greatly enjoy the games. * cool led light design, adding charm in game playing, look more fashionable.