The Sony MDR-1A are Hi-Res headphones for the real music lover. Thanks to the frequency range of 3 to 1,000,000Hz, the sound is detailed. The 40mm drivers produce a realistic sound. Heavy bass sounds and high vocal notes stay natural. With the remote control in the cable, you can easily switch between songs. Are you getting a phone call? Take the call with the button on the cable and call hands free. The leather ear cushions are soft and don't press on your ears. After use, fold the headphones and keep them in your carrying bag.