It runs Rockbox. And is basically a laptop harddisk with 4 recharchable batteries (which I have to replace AGAIN... as they do not hold charge now) and some microtechnology to make it work.
The cool thing is that the harddisk can be interchanged, so any cheap harddisk *(they were expensive back then) works. Comes with a neoprene belt-pouch I forgot to add to the picture.
The headphones were cool back then. Foldable neck headphones. Stayed very well in your ear. they have a volume dial too.
The problem with the Jukebox was of course the harddisk, so you could not run (harddisk crash, required a reboot). Also the RAM (about 2MB) was not enough to hold a complete MP3, so it required 2 spinups to play a song... so the battery life suffered.
it has a line in and line out, and of course a headphone out. Rockbox also unlocked the volume threshold, so you could go deaf by the volume this baby generated. But as many of my recordings had no compression, the extra volume was very welcome.
[doublepost=1452456862,1452456720][/doublepost]@b_o_b: I don't see the any key anywhere... can't press any key....