JBL Synchros S500 Powered Over-Ear Stereo Headphones, Black Premium design features steel headband and comfortable leather ear cushions Premium 50mm driver for professional audio sound with PureBass performance PureBass sound delivers a balanced audio experience with amazing clarity, and deep powerful bass Proprietary LiveStage signal processing technology delivers the most realistic headphone sound experience possible Detachable cable design with iOS3 button and universal remote/microphone cable included