In one word "BRILLIANT". I thought they were not working at first but something just needed adjusting on the TV (going through menu's to headphones). Once that was done great. It sounds better than just watching normal TV sound, ie. like surround sound in a cinema. I live in a large house and can walk all over the place and still hear. I use it for the TV and MP player - can also be used on PC. Only time I have had a static sound is when getting really too far away. I can now iron without having to wear headphones with wires attached to my MP player so a lot safer.
I originally purchased an infra red set which did not work very well but these are far better as infra red ones you need to be directly ahead of it so won't even work when you go out of the room.