bobinfaith, It looks to me like the receiver that you plug into a computer’s USB port so you can connect either a wireless mouse or wireless keyboard to a laptop or desktop computer.
So simply, it pairs or connects the computer with the wireless mouse.
No. I have a separate pair of cordless headphones. I received the new CD player (RealinKus model) yesterday and the USB receiver came with it. It is not mentioned anywhere in the owner's manual as an additional accessory. I'll plug this into the USB port on the CD player and see if this will pair my cordless headphones.
It actually plays great, it's small and compact but when I inspect what I purchase, especially electronics I want complete information.
This is new to me. I'm surprised the owner's manual wouldn't mention the USB receiver included or what it's use if for.