Headband headphones series sennheiser hd line type of fitting over ear transmission mode wired features gold plated jacks sound function passive noise reduction sensitivity 110 dbmw impedance 54 ohm frequency response 8 27000 hz max power handling 500 mw length of cable 3 m types of cable single sided spiral cord jack 35 mm jack shape straight colour black material plastic weight 220 g included in delivery carry pouch 63 mm adaptor