FUJISAN's front housing, which is made of transparent polycarbonate material, has two small latches as indicated with a black arrow in the attached picture. It latches on to the black ABS rear housing. The front and rear housings are then glued together. They will never come apart. Two metal injection molded decorative parts are glued onto the black ABS parts. Just for the housing, FUJISAN has four parts which required four different tooling and an expensive manufacturing process. These are not obvious from the customers viewpoints, but demonstrate our passion and uncompromising obsession with every detail.