This is the charger I used for my MZ-RH10 portable MD player back when I was a student. I believe it's a rare item, as they're hardly available anymore. I no longer have an MD player, so I haven't confirmed its functionality. There are scratches from use. Since it has been stored in a drawer for many years and its operation is unconfirmed, I cannot offer any warranty after purchase. Please understand this fully before purchasing. If you'd like to negotiate the price, please comment directly.