The Fantech Optical Keyboard series Optilete MK872 uses the latest optical switch technology with infra red sensor which gives the fastest response ever, with zero delay response and zero error. It is maintenance free with the most advanced nano waterproof technology applied to whole parts to give the best ever protection to users. The keyboard is enhanced with RGB lighting with 19 modes preinstalled. It also supports macro customization with software that is available to download.