These Sony MDR-ZX310AP/B on-the-ear headphones are more than your basic pair of stereo headphones. This headset delivers premium audio performance and features an integrated mic for handsfree calling and media playback controls for easy operation. Plus, they swivel and fold for easy portability and carrying convenience. Features Enjoy clear, powerful sound with 30mm, dome-type drivers Avoid annoying tangles with the 1.2m (4') Y-type cord and slider with in-line mic and smartphone controls On-the-ear headset for all-day comfort Swivel-and-fold design