A really shitty american electronics company. I bought a memorex MP3 player and it didnt turn on at all with fresh batteries, and it wasnt on lock. I returned and got another one. the second one didnt work-the sound didnt come through correctly. I tried with my sony headphones and the headphones included with the unit. even when they were all the way in, the headphones needed to be held down while listening so the sound would come through. I returned it and got my $140 back. Where i bought it (Target) must've realized it was shitty too, because it was on sale for $119. Coclusion:Memorex is shitty, buy sony.