Here you can order 3 type blue light computer glasses :

1, red lens for good sleep. use before the bed time. don't wear it to outside or long time. too dark.

2, Orange lens for gamging or long time working with blue light.

3, Clear lens blue light only 20% around. but it is clear. can see every thing nature color.

red lenses glasses block close to 100% of both blue and green wavelengths. While many glasses block only blue light, recent studies have shown that lower wavelengths also have a significant effect on sleep patterns. We block all wavelengths below 550 nm, which includes blue, green and violet.

BLOCKS BLUE & GREEN LIGHT: Along with blue light, green light also

suppresses melatonin production and prevents restful sleep. These block blue & green light to give you a productive night’s sleep!

RELAX & SLEEP: You will feel an immediate physiological effect when you put these on. You’ll feel relaxed and ready for bed by wearing these 1-3 hours before bed. Less time wasted laying in bed, more time getting deep, restful sleep!

PERFECT FOR TRAVELERS & SHIFT WORKERS: Work at night and sleep throughout the day? Sleep Savior glasses will give you quality day-time sleep. Put an end to jet lag and sleep through your flights.

Best results from wearing these glasses will vary by individual. Recommended to use for between 30 minutes to 2 hours before bed time. We encourage you to experiment and find what works best for you.

Noted : red lens too dark. can not wear to outside like sunglasses.

Orange lens can blocking 99% blue light. and not too dark like Red lens. so. better for long time working .

 

 

 

C2 frame

 

C4 frame

best choices is one for red one for Orange. orange for long time

red for before bed time. so. here you can buy two pcs. and get

better price. which frame color for red. and which for orange

you need write to store or order. like c1 red + c3 orange.

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