I have no way of testing them. I did try and put batteries in them and none of them turn on, so I am gussing they all don't work. I have not opened up any of them and am not sure of the inside condition of the units either. 

I recently bought a storage unit at auction that had a bunch of old electronics and other misc used and new stuff.

I am thinking this was some sort of electroncs repair / sales shop. 

Everything in this unit that i bought seems to be 15-20+ years old. I don't have any info on these hand held units. 

Please feel free to ask me any questions you may have. 

I will be listing lots more of diferant electonics and other old gaming systems, games, and speakers etc...

Unit #10,11, 12, 40,42,44,46 looks like they have more damage then the others might. This is why the price is lower.