When you're on the move, listen to tunes in clear, balanced sound with the MDR-ZX110AP headphones featuring dynamic 1.38 in drivers. Cushioned earpads give you extra comfort on the go. The swiveling earcup design allows easy storage when they're not in use, and enhances portability when you're traveling. The earcups swivel flat, so you can pack them into a suitcase or bag without worrying about taking up valuable space. With an inline remote and built-in microphone on the headphone cord, take hands-free calls from select smartphones while listening to music.