Where are these made?

China! Sadly with this new generation Klim moved all production to China, and - as so often happens - the quality seems to have left town as well.

What % light at 530 nm will the clip-ons block? Per scientific studies, that's the important quotient for sleep. Thanks.

Hi Jessica, thanks for asking ! These glasses are not sleep glasses but blue light protecting classes so they will focus on blocking the wavelengths related to blue light, mostly. Blue light is in the 380 - 500 nm spectrum , 530 nm is where green light sits ( between 500 and 550 actually ) . Our optics will be able to block between 80 to 90 percent of wavelengths between 500 and 550 nm , which can be considered as green light. I hope this helped you and I wish you a great day.

Is my tv screen going to look yellow

Yes! your TV screen will look yellow. But over time you will not notice the yellow after your eyes start adjusting. These are very good lenses that cut out all the blue light from your laptop or PC.

Are these any different than the blue blocker glasses you can get from any optical department?

Hello, Thank you for your question. Blue-light blocking glasses have different levels of filtering, so it would depend on the model and specifications of the glasses. These block 86 % of the blue light which is among the highest on the market. Kind regards, KLIM Team

ASIN	B07CCG2QK9
ASIN	B07CCG2QK9
Arm Length	146 Millimeters
Best Sellers Rank	#465,239 in Health & Household ( See Top 100 in Health & Household ) #2,254 in Computer Blue Light Blocking Glasses
Brand	KLIM
Bridge Width	17-34 Millimeters
Color	Glasses - Clear
Customer Reviews	4.3 4.3 out of 5 stars (2,909)
Date First Available	July 17, 2018
Department	unisex-adult
Frame Material Type	TR90
Frame Type	Full Rim
Frame Width	13.6 Millimeters
Included Components	Carry Pouch, Cleaning Cloth
Is Discontinued By Manufacturer	No
Item Shape	Rectangular
Item Type Name	Blue Light Blocking Glasses
Item Weight	0.02 Kilograms
Item model number	207420
Lens Height	14.3 Centimeters
Lens Material Type	Resin
Lens Width	34 Millimeters
Material	TR90
Pattern	Solid
Product Care Instructions	Handle with care
Product Dimensions	5.71 x 1.26 x 1.38 inches; 0.71 ounces
Special Features	Lightweight
Style Name	Glasses
Unit Count	1.00 Count
size	Medium

KLIM Blue Light Blocking Glasses High Protection for Screens and UV

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