2 sony minidisc players / recorders both work, with minidisc

2 working Sony minidisc players with 6 minidisc. First model is the grey minidisc walkman model mz-nh600D has light scratches on the front has some battery corrosion on battery terminal, it doesnt effect anything still works great on it's battery power, takes 1 AA battery. Grey minidisc player missing rubber part that covers mini usb port. On the grey one the forward and reverse button was a little worn but still works.
I do not know of anything not working right on both minidisc players. I briefly tested both minidisc players they both played the blue sample audio minidisc.
Second minidisc player / recorder is the MZ-N505 TYPE-R net md good condition not many scratches on front or back. Battery compartment clean. Volume up button was kind of worn/ finicky. I only know both minidisc players played the disc fine no issues. I have not tested everything though, only basic buttons tested all sold as-is. Includes 6 working minidisc with a case for 5 and labels. 1 audio cord. all in pictures