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Gunnar Optiks Computer Blue Light Blocking Glasse's Emissary, Onyx Frame, Adult/Unisex BX8071512100 A high-quality noise-cancelling microphone insuresPRODUCT DESCRIPTION GUNNAR produces the only blue light blocking computer and gaming glasses with Patented Lens (#9417460) Technology that is recommended by doctors to protect and enhance your vision. GUNNAR improves performance while viewing tablets, smartphones, TV & computers to reduce digital eye strain, fatigue and headaches. Unlike other blue light blocking glasses, GUNNAR developed the Blue Light Protection Factor, telling you exactly how much