Get the best of both worlds with the MasterKeys Pro S : the brightest LEDs and the best tactile feeling that gamers have come to love. We completely redesigned the interior to fit both CHERRY MX switches and the biggest LEDs that radiate 16.7 million colors. You also get on-the-fly macros, profile support, and easy-to-use software - all in a sleek, minimalistic design.HIGHLIGHT FEATURESMasterKeys Pro SBRILLIANT ILLUMINATIONNo dull, muted colors here. Patented interior design makes each LED pop-out and shine. Get bigger and brighter LEDs that radiate any color you desire.  MasterKeys Pro SMULTIPLE LIGHTING MODESChange and customize per key backlighting with or without software. Presets include Color Wave, Breathing, and a handful of responsive effects. MasterKeys Pro SON-THE-FLY MACRO AND PROFILE SUPPORTOn-board processor and profile keys let you save macros and backlighting settings without hassle.  MasterKeys Pro SPROCESSING POWER UNLEASHEDNo loading. No waiting. The MasterKeys Pro S is outfitted with the most powerful ARM Cortex M3 processor. Save and execute commands and macros instantly. You'll beat your opponent to the punch every time.