Okay, we have this Ipod 4gb for sale, it includes the charging cord and has been in a silicone case since purchase. Also, it has a Nike App installed which is that little cordless receiver in the middle there. Knowing many people, me included, wore these when running, Nike had a little transmitter you could put in the sole of your running shoe - Nike even had special shoes that would accommodate the transmitter. As you ran, each step would transmit to the receiver and it would track how long you ran and your speed. it was really cool, I lost the little transmitter though, so that is really a moot point, but cool none the less.
I kept the Ipod in a silicone case the whole time so it is still in great shape, still works although I haven't used it in probably 20 years. I was jamming to some Boston and ZZ Top just a while ago. Still works just fine..