Casio AE1200 vs W221H: Can You Swap the Modules?

In this video, we take a technical look at the compatibility between the Casio W221H and the AE1200 "Casio Royale." Both watches shows 3299 code on the backside of the module, but the button placements on the case have slight differences. I perform a side-by-side comparison and attempt a module swap to see if the buttons, buzzer, and backplate align correctly. We discover that while the W221H module fits into the AE1200 case and functions well, the reverse swap faces some challenges with the backplate fit. If you are interested in Casio modding or looking for replacement parts for your AE1200 or SKXMOD case, this experiment provides the technical details you need for your next project.