The Sunshift visor looks just about like any other replacement visor — when no UV light is present, it’s about as clear as a normal visor. There’s maybe a very slight tint, but many “clear” visors have a very slight tint also.

The Sunshift is virtually indistinguishable from any other clear visor and it weighs nearly the same. The standard Akuma dark smoke visor for a size XL helmet weighs 111 grams (3.875 oz.) and the Sunshift visor for the same helmet weighs 118 grams (4.125 oz.)

Bring the visor out into the sun and the Sunshift turns dark gray, going from clear to about a 50% light transmission tint within a couple of minutes.



Temperature and, of course, the amount of direct sunlight will slightly affect the photochromatic effect. In late afternoon direct sun and about 60 degree temperatures, the Sunshift went from light to full dark in about 2 minutes.

 

Read More: http://www.webbikeworld.com/r4/photochromic-motorcycle-visor/