I did my best to figure out how to test it.  I didn't mess with any settings, just read directions on how to press a button and record and then press a button and play it back.  I don't know if it reordered sound but can't see why it wouldn't, the lines moved as I recorded saying the machine heard me. I have a battery which after 30 minutes didn't get enough charge to turn the machine on.  I have the battery charger and the cable to run it off the battery charger and skip the battery That is included with the sale.  Beyond fumbling around and doing the basic will it record and playback video, I have no idea of its condition, will it function as it did when like new, I have no idea.  sold comps for similar condition is $275-$300 plus shipping and they didn't have the AA-P250U AC Poer Adapter which sells for $40....Mine is priced extremely fair.