The MDR-EX15AP EX Monitor headset from Sony allows you to play back music and take calls from your portable device. Its in-line mic and remote are compatible with Sony's Smart Key app for Android devices which allows you to customize control of your Android. The headset have 9mm drivers with Neodymium magnets, and include 3 pairs of silicone ear buds to provide a comfortable fit.9mm Drivers Neodymium Magnets In-Line Mic & Remote Smart Key App Compatible 3 Pairs of Silicone Ear Buds 9mm Drivers Neodymium Magnets In-Line Mic & Remote Smart Key App Compatible 3 Pairs of Silicone Ear Buds