Developed with the professional DJ in mind, with respect to the wallet of the unpaid amateur, Zinken is chock-full of handy features that you never even knew you needed, like the dual-duty TurnCable and ZoundPlug. Designed for maximum comfort, the Zinken features swivel ear caps, an adjustable headband and specially selected materials that do not absorb sweat and odors. These headphones are designed to thrive in a DJ environment, but also excel at day-to-day use. 40mm Dual Diaphragm Drivers Frequency Response - 20Hz-20kHz Impedance - 85O Sensitivity - 98dB Max Input Power - 50mW