Allows two people to use the TV Listener at the same time!The TV Listener headset is erogomic and lightweight with soft cushioned ear pads. An additional headset allows two people to use the TV Listener at the same time. The headset has a working range of up to 33 feet and there is no limit to the number of headsets that can be used with a single transmitter. And with the volume control on the headset, each user can adjust the volume to his own liking. Requires two AAA batteries (not included). To be used only in conjunction with the TV Listener