Great for travel: The open-air design provides listening comfort and the folding headband is compact for travel.
Noise-canceling circuit: Built-in microphones sense outside noise and send an equal-but-opposite canceling signal to the headphones, reducing ambient noise.
Includes: Airline plug adapter for compatible in-flight entertainment systems and carrying pouch.
Requires: One AAA battery (not included).
Refurbished by Sony and shipped in Sony-sealed box with Owner’s Manual, Sony accessories, and New Sony Warranty. To check warranty details or to view owner’s manual, see: http://eservice.sony.com/webrma/web/index.do