I know at least a half-dozen of us have one of these watches ... out of a total population of 500, how many can we muster?

Blue enamel changes colors around other blue enamel items.

They seem to speak to one another on some sort of color wavelength.

First photo, Christmas gift to myself (with wife's agreement):
Back & inside. It came with the bracelet and blue rubber/metal strap(s) but I liked this red strap so much I moved it over several years ago and haven't gone back.

If you have one, I'd like to see it, sparkling in the sun or water (I confess I have not gone diving with mine).
Cazalea