You can buy extra headsets with no transmitter - just search on Amazon for : ASIN: B06XC1XLNJ. They would be better off to leave them out of the package and including something like cheap AA Batteries. The around the ear part needs constant adjustments. He was pleased with the closed rubber toe and the fabric construction appeared sturdy and well made. It is a very nice shoe but in less than 1 month of use was broken, and the seller tells me he can not do anything about it, despite having sent the photos which shows that everything is taken off and has no use. It also has hooks to hang your keys on so that they dont get lost. I also have an HE Washer with sensors so I think it is nice to put zippered items in mesh bags in my washer. Very cheaply made! Theyll be great for cold weather, but even if I treat mine, Im not going to use them in the rain or snow. The sound is also something that II noticed.