Sony MDRZX550BN Bluetooth and Noise Cancelling Headset (Blue) Enjoy convenient Bluetooth audio streaming, Digital Noise Cancelling technology for less noise (up to 90%) Easily take calls, choose tracks, and control volume, Rechargeable battery for up to 29-hours of use, Convenient One-touch listening technology 30mm drivers for rich, full frequency response, Lightweight and comfortable on-ear design, USB charging cable included