IDANCE FDJ500 - Watt - Channel Recording Studio Equipment, Gold and Black High-quality full-range headphones designed for DJs,Swivel cup to monitor audio & cue audition,Breathable padding for extended use comfort,Large 50mm driver, neodymium magnet for optimal frequency response,Detachable cord for EZ replacement Driver Unit 40mm Driver Type: Neodymium Impedance: 40 Sensitivity: 100dB+/-3dB Frequency Response: 15Hz~20KHz, Cord Length: Approx.1.5m, Cable Type: PVC Detachable, Plug: 3.5mm ,gold chrome