Sony XB950N1 Extra Bass Wireless Noise Canceling Headphones, Black

* Industry leading digital noise cancelling technology. Connectivity Technology: Wireless Bluetooth 4.1 * Feel the power of EXTRA BASS * High quality wireless audio with Bluetooth and NFC * Optimize your sound settings with the Sony Headphones Connect app * Enjoy broad frequency response ; Frequency Response: 20 20,000 Hz (POWER ON) (Wired).Driver Unit:1.57 inch, Dome