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Optical switches on gaming keyboards are still in their infancy, but the prospect of lighting-fast actuation and the absence of metal parts are really attractive features. Bloody Gaming was the first company to really embrace optical switches in a gaming keyboard, to the best of my knowledge, although Razer was the first “big name” manufacturer to jump into the optical fray with its recently released Huntsman Elite. Now in a third-gen form, Bloody’s LK (Light Strike) Libra switches take a starring role in the company’s B945 mechanical gaming keyboard (See it on Amazon).
Source: IGN.com Bloody B945 Optical Gaming Keyboard Review