Headband headphones series beyerdynamic custom type of fitting on ear transmission mode wired features gold plated jacks headset compatible with android windows phone blackberry ios call functions answer call end call sound functions bass boost passive noise reduction sound mode stereo button position on cable sensitivity 103 dbmw impedance 38 ohm frequency response 20 20000 hz number of drivers 1 magnet type neodymium length of cable 12 m