what is the country origin?

Hi ghujj, The VizoBlueX has been developed and produced in our Manufacturing Department in Taiwan. Kind regards, Meryl

What percentage of blue light is blocked at each of the wavelengths 380nm to 490nm?

Hi and thank you for your question! The Vizomax anti-blue light filter for computer monitor blocks 100% of the blue light between 380nm to 490nm. Please, let us know if you have more questions! Kind regards, Meryl

anti-blue light screens are clear. no tint. yet anti-blue light glasses are mostly all tinted yellow. is there a reason why

Hi Dena, Thank you for your question! Our anti-blue light TV Protectors are clear as well as we have used the latest anti-blue light technology when creating them. It depends on the brand & manufacturers whether an anti-blue light protector is yellow tinted or not. The quality doesn't depend on this you can rest sure about it. Kind regards, Meryl

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👓 Protect your eyes, keep your edge.

MULTI LAYER DEFENSE SYSTEM - 100% optical-grade layers eliminate UV and HEV light for comprehensive screen protection.
SLEEP BETTER WORK SMARTER - Reduces eye fatigue and improves sleep patterns by filtering disruptive blue light.
TRUE COLORS ZERO COMPROMISE - Preserves the vividness and clarity of your LCD/LED monitor display.
SHIELD YOUR VISION WITH PRECISION - Blocks harmful blue light (380-480nm) to protect your eyes from digital strain.
FITS PERFECTLY INSTALLS EFFORTLESSLY - Custom-sized for 27-28 inch screens (24.8" x 14.6") with easy, no-fuss setup.

The VizoBlueX Anti-Blue Light Filter is a premium optical-grade screen protector designed for 27-28 inch monitors. It blocks harmful blue light wavelengths (380-480nm) and UV/HEV rays with a 100% multi-layer system, reducing eye strain, fatigue, and improving sleep quality—all while maintaining true color accuracy and easy installation.

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