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Patented Photochromic Solar UV Color Change Keychain can check Solar UV Index for skincare or for better solar energy using.

Patented Photochromic Solar UV Color Change Keychain can check Solar UV Index for skincare or for better solar energy using.

If you've ever wondered how fast your skin cells are being roasted while sunbathing in the open, here's the perfect gadget for you. The center of the Solar Energy & Sun UV Tester can change series of color to reflect the ultraviolet intensity of the sun. As it turns darker, that's your cue to slap on more sunblock lotion and bring out the solar energy equipment for use. Although the product isn't something you would associate with being professional, it does have one redeeming quality. It lets you know the best time to juice up your solar charger or use your solar energy equipment,and remind you to take corresponding skin care action according to Sun UV changing.

China Patented and CE&ROHS Certified.