These SP-Star Luminous GID switches manufactured by SP-Star are smooth and produces a nice higher-pitched "clack" due to the full Polycarbonate (PC) housing. These SP-Star Switches have a fun little secret, once exposed to enough light, you will find them shining at night, even without any RGB, that's because they are glow in the dark switches! The shell on these switches absorbs the light source (ultraviolet light is the best) and it will have 2-3 minutes of fluorescent effect in the dark light. The luminosity and duration of luminous materials are affected by the environment, the light source absorbed (not its own light source), and the time. They are not always bright.