Sony MH-EX300AP Stereo Headset - Original OEM - Non-Retail Packaging - Black Magnet: Neodymium (440kJ/m3) for outstanding bass performance in a small driver Speaker Type: Closed, Dynamic Sony MH-EX300AP Stereo Headset Compatible with Sony Xperia Z, Xperia ZL and Xperia V phone models. Part Numbers: MH-EX300AP / MHEX300AP / 1268-228.