Sony MDRZX330BT/B Bluetooth Stereo Headset, Black Bluetooth audio streaming with SBC and AAC support, Convenient One-touch pairing with NFC.Connectivity Technology: Wireless Built-in microphone for hands-free phone calling, Rechargeable battery for up to 30hrs music playback 30mm drivers for full frequency response, Compact, swiveling on-ear ear design, USB charging cable supplied Connectivity technology: Bluetooth, NFC Connectivity technology: Bluetooth, NFC