Well yeah, different models have different designs.
Ok, but please tell me any past Gravitymaster and Mudmaster that have the exact same module, and the only difference was the design? Not to mention, the Casio Pro Trek PRT-B50 has the EXACT SAME MODULE. This is getting ridiculous. The only difference between the newest Bluetooth Gravitymaster, Mudmaster, and Pathfinder, is the design??? Can you see how stupid this is?