
blue light blocking glasses major these 3 type lenses. clear, orange. RED.
Orange blue light glasses 99.5% blocking for gaming computer or hard working long time. and good sleep feeling glasses.
RED lens can blocking 100% blue light. It is professionally designed to improve sleep. Please use before bedtime. It should not exceed one hour. Other scenes, especially outdoors. Please do not use. Too dark!
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C2
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C3
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C4
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