The XO Vision wireless IR Headphones feature extra padding for superior comfort, a volume knob, auto shutoff and a unique foldable earcup design. Extra foam cushioning gives you superior comfort making them ideal to wear over long periods; Auto Shut-Off saves battery by automatically shutting down when not in use; One size fits all - easily adjusts to fit any size head; Touch On/Off Switch and Volume Control conveniently located on side of headphone; Batteries Included; Simply turn the headphone on and place over ears.