The track was badly warped. Not on these. Lo he probado con un iPod para controlar la música y genial, y he lo he usado para hablar con mi móvil (un Android) y también genial. I charged them for 1 hour and then tested a few different kinds of music. Once that happens, the V3200 appears in your list of devices to pair with. But the mic just suddenly stopped working. Bought it for my husband. Snap these up right now. This has been a total game changer for me. are leather.