Here is your watch! Actually, this one is mine. Yours is the one with the dead battery. My battery was dead, not too long ago, but I replaced it, and now you can, too!

Your first job is to remove the watch band, which has flanges that overlap the back plate.

But wait! The watch band isn't quite what it seems. On the side of this watch, there are what appear to be screw heads holding on the band. These are not screw heads, they're just decorative. Instead, you must use a screwdriver or other thin blade to compress the spring pins and remove the band.