Tested Minidisc Walkman with remote and 12 discs (8 still in wrapper). I bought this used ~15 years ago but have basically never used it myself. Here’s a video where I run it through its paces:   

https://www.youtube.com/watch?v=F6u5S1nQW-M

If there’s anything else you want me to test, just ask. 

Battery not included.