I remember seeing these in catalogues and stuff but I never had one or knew anybody that had one. However a few years ago my uncle came around to our house once (I was in the door from school and he was there) and he showed us a portable black and white TV he bought for a friend. I think it needed a few C batteries and the picture was terrible. It was a tiny screen, probably a couple of inches bigger than an Iphone screen and AFAIK he bought it in a discount shop. It had a round aerial on the top.