Hi everyone, I'm looking for a Sony WM-503, Black in color. I believe this one to be one of the players I had in high school a few years back. It had an internal rechargeable battery but you could also attach 1 AA to the bottom of it. I remember having the box and everything for it. I bought it at a Thrift Store for about $5 or less. Man, you just don't know what you've got sometimes until it's gone. Such is life.