In ear headphones series philips she type of fitting in ear transmission mode wired features gold plated jacks headset compatible with android music functions pause play volume call functions answer call end call sound function in line volume control sound mode stereo button position on cable sensitivity 107 dbmw impedance 16 ohm frequency response 8 24000 hz driver 86 mm number of drivers 1 membrane mylar dome magnet type neodymium v