Something we are rather fond of, and are pleased to see is the use of Cooler Masters' advanced textured surface that not only looks great, but also deters the build-up of finger-prints while providing a stable grip for extra control. Inside we find a 32bit ARM MCU, 512KB of onboard memory, and the new 7200DPI PWM3330 optical sensor from Pixart. The MasterMouse S is accompanied by similar software that was supplied with the MasterMouse PRO L, which means we can expect an advanced level of customisation and performance controls, including the Storm Tactix feature that will expand the number of programmable buttons from 6 to 9 + 1 switch.