Sony MDR-ZX750DC Wireless Noise-Canceling Bluetooth Headphones W&rsquo; Case - MDRZX750DC No Wires. No Noise, Convenient multi-function design The MDR-ZX750DC headphones provide 4 convenient listening solutions using the integrated Bluetooth2 with NFC and digital noise cancellation technologies. For the ultimate experience, you can even listen to your aptX & AAC audio files wirelessly with noise cancellation activated or use conventionally in passive mode without relying on the battery. Maximize your wireless listening Enjoy high quality Bluetooth audio streaming and simplified connectivity with Near Field Communications (NFC) technology.2 Simply align your compatible devices and touch the NFC logos to activate or deactivate pairing. With built-in AAC and aptX codec support, you will benefit from maximized sound quality when streaming your music wirelessly Make or Take Calls. Also enjoy the convenience of hands-free calling thanks to the integrated microphone and Bluetooth2 profile connectivity. Once your phone is paired, simply press the phone button on the earpiece to accept incoming calls then press again to terminate the call. Music playback will automatically resume once the call is completed. Supplied Accessories. To further your listening experience the following accessories are supplied: USB charger, Micro-USB cable, stereo connecting cable, smartphone control cable, and a padded case.