Sony MDR-XB950BT/H Extra Bass Bluetooth Headset (Gray) Enjoy high quality Bluetooth audio streaming and simplified connectivity with Near Field Communications (NFC) technology. Simply align your compatible devices and touch the NFC logos to activate or deactivate pairing.Electronic Bass Boost Electronic Bass Boost circuitry delivers powerful, enhanced bass response at the push of a button, to provide music you can feel!Flexible listening For the ultimate wireless audio streaming experience, aptX & AAC codec support ensure maximum signal quality, or listen to your favorite playlist conventionally, in passive mode, without relying on the battery.Enjoy extended comfort Lush, wrap around ear cushions provide a comprehensive, acoustic seal, in long term comfort. And when the music is over, the swiveling ear cups fold flat for enhanced portability.Enjoy broad frequency response Large, 40 mm driver units deliver broad, dynamic, and balanced sound for an exceptional listening experience. Enjoy 20 20,000 Hz frequency response when streaming audio wirelessly or even broader frequency response, from 3 28,000 Hz when using the supplied audio cable.Easily take calls wirelessly