The GAZZEW Boba U4 RGB silent tactile is a variant of the GAZZEW Boba U4 that comes with a clear top housing material instead of the pearl white top housing of the regular Boba U4. It is specifically designed to complement LED RGB set-ups with its clear top housing, allowing the LED light to pass thru and be diffused better for stronger illumination. It also comes with the pearl white bottom housing that is made out of a new plastic material that is comparatively softer than that of the regular Nylon PA66 material, but it is still very smooth and has the same good characteristics of the polycarbonate material, it also has a higher melting point than the polycarbonate material. It shares the same silent sactile feature and the tight fit configuration as the regular Boba U4, at the same time, its internal configuration also has the smooth “D” shaped bump. Basically, this is virtually the same as the GAZZEW Boba U4, the only difference is the clear top housing.