I'm not encouraging you to buy, just letting others know what this watch offers (albeit not very much, but in the interests of accurate information, as you've said twice that it doesn't have the Pac-Man chime) :)
I wouldn't want to listen to that, it doesn't sound like Pac Man at all. I have several watches from the 80s that sound much better (Knight rider, 007)
I mentioned it already, here (at the bottom of the post!) Pac-Man chime (press and hold the top-right button) here
No, sadly not, I think this is just an $8 watch with some laser etching & artwork...
I thought the top right button does play the game music?