step 1:put test card back of the glasses lens
step 2:use the test light to test ,then the test card will change colors,with lens ,still clear,without lens change to dark colors.
that means the lens is anti blue protection
Different colours available
Adviced to everyone who stare at screens on daily basis. Save your eyes before it’s too late I bought to my family too!!
Limited quantity in stock!!
Buy more than3 pcs and get discount
Better than putting your many later in the hospital as charges..
For further clarification and to check more images and a video contact the provided number 0543179677