Now with Bluetooth streaming, you don't have to worry about cables. The MDR-ZX770BN offers a wire-free music experience with easy control over receiving calls and playing music. Don't let external noise disturb your state of mind. With MDR-ZX770BN, a variety of ambient noises such as traffic sounds are blocked out effectively, so you can always tune into your world no matter where you are. Feel every bass beat of your music come alive with sculpted air vents located on the headphones that maximize airflow to accurately reproduce heart-thumping rhythms and beats. Thanks to the large neodymium driver units, the MDR-ZX770BN delivers intense bass beats so you can enjoy the booming sound of your thumping tracks. Also, its wide frequency response enables you to hear the powerful lows to radiant highs, for perfect audio indulgence. Enjoy continuous music playback time with a long battery life with Bluetooth switched on. That's a whole lot of listening no matter where you go. Listen to your favorite music at ease with soft, wrap-around ear cushions that cup your ears securely and optimize sound clarity. The MDR-ZX770BN is also designed with a solid metal headband with an adjustable outer slider to ensure the headphones sit neatly around your head without loosening.