Test via the spectrometer(the performance of blue light blocking):block 89% within 500nm,block 91% within 490nm,block 93% within 480nm,block 94% within 470nm,block 96% within 460nm,block 98% within 450nm,block more than 99% within 400nm-440nm.
Serious color distortion due to 90% blue color was filtered out. Please check Eyekepper BB40, BB60 and BB90 lenses if you do not like serious color distortion.
The lenses block 90% blue color of online test for color filtering properties.
PRODUCTS DIMENSION - Frame Material is Metal, Lens width about 2 1/16 inches(52mm), Frame width about 5 1/4 inches(133mm), Lens height about 1 1/2 inches(38mm), Frame height about 1 11/16 inches(42mm), Bridge (DBL) about 9/16 inches(14mm), Temple length about 5 5/16 inches(135mm), with spring hinge.