I like these vintage melody alarms from the early 1980's... they are really hard to find in good condition, though. My favorite is the middle M-301, because it plays so many different songs from different genres of music. I was also lucky to find one that was in NOS condition. The others are not new but are the best condition examples I could find. In one case (the white one) I bought a great looking watch with a dead module, and then replaced the module with that of a beat up (but functional) melody alarm.
I used to have one with the guitar graphic on the face, but it was destroyed in an unfortunate accident. :(
There are also plastic versions of some of these watches. Anyone have one or more that they want to share? There were many different colors released. I think most of these are from 1980-1984.