Headband headphones additional 63mm jack series sennheiser hd line type of fitting over ear transmission mode wired features gold plated jacks sound function passive noise reduction sensitivity 108 dbmw impedance 24 ohm frequency response 21 18000 hz length of cable 3 m types of cable straight cable double sided jack 35 mm jack shape straight colour black material plastic earcup material synthetic leather weight 165 g included in delive