Tesoro showed off the second-edition of its Gram series gaming keyboard, the Gram SE Spectrum. This keyboard differs from its predecessor in taking advantage of Tesoro's in-house Optical switches, while the older Gram uses mechanical switches. Its electronics offer full NKRO (n-key rollover), letting you make any number of simultaneous key presses, and having them all register. An optical switch uses laser light obstruction to register a key-press, and is extremely accurate compared to electrical switches. It also offers higher lifespan than both membrane and mechanical (electrical) switches. Like the original, the Gram SE Spectrum features full RGB LED lighting, with a 16.7 million-color palette.