One of the crazest watch purchases I have ever made was to pick up a Seiko Frequency. This odd little watch incorporates a speaker and six drum patterns, "created solely for the watch by popular music producer Tetsuya Komuro," along with two metronome modes (one audible, one visual), an alarm function that play's one of the six drum patterns or just beeps, and an EL back-light. This is a cool little watch that reminds me of something one might see on Star Wars. The one I own is fully functioning and although I don't wear it much, I do tend to take it out and play with it. I guess it's true not really much difference between men and boys.
First two pictures are off the inter-net last one is my watch.
These are two of the different models, they came in a few bright colors.