This is a lot of (4) Aftermarket Wireless IR Rear TV / DVD Overear Headphones / Headsets that came out of a 2005 Ford F250 XLT Super Duty Truck. They will fit numerous other vehicles, or you can use elsewhere. Brand new batteries in all headphones / Remote. ***Just keep in mind that this remote likely won't work with your trucks DVD system unless it happens to be the exact same model. But I wanted to include it, just in case!*** Channel "A/B" SELECTOR SWITCH (WORKS WITH SINGLE AND DUAL CHANNEL SYSTEMS) INCLUDES BATTERIES !!!!! 3.5 AUX PORT TO PLUG INTO ANY DEVICE SUCH AS MP3, SMART PHONES, AIRPLANES, TABLETS AND MUCH MORE!!! There are 2 sets of 2 different headphones. 1 set will fold in and 1 set won't! SMOKE FREE HOME! SUPER FAST SHIPPING!