The difference between body waterproof and non-waterproof will be the assembly process. To make the waterproof case, hand assemble can’t reach the standard so it will need the machine to high pressure the camera body because it will need to consider the button, the interface waterproof. More difficultly, this model with two screens, thus it will need to be more careful during the machine's high-pressure assembly to avoid the screen being broken. Moreover, it is the touch screen.