Superlux HD-631 DJ Headphones - closed-back, over-ear, dynamic, neodymium magnet, 101dB SPL, impedance 40 Ohms, frequency response 20Hz-20kHz, thomann max input 3000mW, detachable cable, coiled cable up to 3m with stereo mini-jack and 1/4" jack adapter. Weight 346g with cable, 287g without cable, Colour: Black