Blue Light Blocking Fit-over Computer Glasses With Amber Lens

Used only once(5 min), Almost new! You can wear these on your regular glasses. Nice and clean It comes with fine cloth - Frame Material: TR90, Lens width: 2.52"(64mm), Frame width: 5.91"(150mm), Lens height: 1.69"(43mm), Frame height: 1.81"(46mm), Bridge (DBL): 0.59"(15mm), Temple length: 5.51"(140mm), Spring hinge: No, Lenses: Aspheric, Head size: Medium -98% blue light blocking for wavelength 395nm-500nm Use to test wavelength is 450nm The data of left is visiable light,the data of middle is blue light remaining,the data of right is UV light remaining. EYEKEPPER glasses are specially designed to filter out a portion of harmful blue light.