When you're on the move, listen to tunes in clear, balanced sound with the MDR-ZX110 headphones featuring dynamic 1.38 in drivers. Cushioned earpads give you extra comfort on the go. Lightweight 1.38 in neodymium dynamic drivers deliver a punchy, rhythmic response. Listen in total comfort. These headphones have a self-adjusting headband and soft cushioned earcups that cover the whole ear. The wide frequency range-spanning 12 Hz to 22 kHz-delivers deep bass, rich midrange, and soaring highs.