List of Logitech Unifying receiver compatible Devices

Hey everyone,

I have logitech keyboard + mouse combo which uses Logitech Unifying receiver, it means my wireless keyboard and mice works from single USB dongle or this "unifying receiver" device. So far it is cool as it saves one of my USB port. I got to know recently that you can connect upto 6 wireless devices simultaneously to computer using this single unifying receiver. If that is true then is there any other device like wireless headphone, air mouse or anything else cool and useful with PC from logitech.

Upon searching, all I see is keyboards and mice list , is there no other device is supported other than keyboards and mice ? Would love to see if there is any such list.

I am specially interested in Unifying receiver compatible Headphone to use with PC.

I did a quick search for you and can't find devices other than mice and keyboards from logitech. And because it Logitech's proprietary technology, no one else is making devices using this technology.