In ear headphones series sony mdr xb type of fitting in ear transmission mode wired features in line control microphone sound type powerful bass sound mode stereo sensitivity 106 dbmw impedance 40 ohm frequency response 4 24000 hz max power handling 100 mw driver 12 mm number of drivers 1 membrane pet magnet type neodymium length of cable 12 m types of cable double sided flat cable tangle free jacks 35 mm 4 pole jack plug for apple