Enjoy listening to foot-tapping music wearing the Sony comfortable fit stereo In-Ear headphones. Equipped with 9mm drivers, these headphones offer you fine quality audio. They deliver over a range of sound, with clear high treble, mid-range and bass sounds. Switch from music to calls with one touch, and customize remote functions with the Sony Smart Key Android app. Enjoy comfort and stability with hybrid silicone earbuds, provided in 3 sizes for that perfect fit. Feel the thump of bass and the clarity of midrange and treble sounds with high-power neodymium magnets.