If you mean this one.
I just really like it, its reasonably thin has a nice clear display (light sensor as well) and you don't see many of them about. I've got another Waltham which is a plain round faced watch its nothing special I'am holding on to it for a spare module incase this one goes belly up.
As for the module I've no idea who makes it...sorry!
Do you have some Waltham's by any chance...
