The reason I still use it is because it supports gestures using a gliding motion instead of a physical wheel. Funciona bien, he invertido dinero en diferentes tipos de audífonos y ahora que los nuevos teléfonos ya no incluyen el jack de 3. The only problem that I encountered was securing the unit to the ceiling and I solved that by securing a closet rod cup to the ceiling to contain the post that holds the ceiling! its been a great way to clear up desk space so I have more room to move and do work at my L shaped desk. 5, they sat conformably at my hips. After a quick search on YouTube I find that this a fairly common repair and once I disassembled the controller is was nice to see that it wasnt soldered to the circuit board as I expected. If you are on your feet a lot I would definitely recommend them. A couple of 10, 12 and 13 milers and two long 20 miler runs. Stay away from this discontinued Sony unit. No fittings included as stated in description, was bent on arrival but have somewhat managed to rectify this to a degree.