I just picked up a BGM-115GT. It has a weird display, kind of like an old LCD, and the light didn't work, so I figured it just needed a battery. After popping off the back, I discovered it had two batteries. One small one, and one tiny one. So I figured I'd better download the module. It is a melody watch. I've never had one before. I guess that explains the two batteries. I only keep regular Baby-G batteries in stock, so I guess I'll find out for sure once I change them out.
Just wondered if anyone had ever dealt with a melody watch before, or if that's just for girl watches.