UVtech SLEEP-2R are stylish glasses that filter out blue and green light that disturbs the natural rhythm of the day. There are 3 lens colours available, red (100% red and green), orange (100% blue and 70% green) and yellow (30% blue). SLEEP-2R glasses that can be worn 1.5 hours before bedtime to block blue light and optimise the circadian rhythm (adjusting your biological rhythm). They can block up to 100% of harmful blue and green light. They block a spectrum with a wavelength of 380 to 565 nm. Coloured glasses reduce eye fatigue. Certification: CE EN166 / ANSI Z87.1 Unlike clear "blue light safety goggles", these actually filter out the blue and green spectral components.
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