Spring hinges: No

Due to the difference between different monitors

plastic frame with spring hinges

Lens width about 2 inches (50mm)

30 inches(approx

Transition Photochromic Bifocal Reading Glasses BSBR2142 Color:Yellow Spring hinges: NoPolycarbonate lens, plastic frame with spring hinges Frame width about 5 1 2 inches (140mm) Lens width about 2 1 16 inches (53mm) Lens height about 1 9 16 inches (40mm) Bridge (DBL) about 9 16 inches (14mm) Temple length about 5 7 16 inches (138mm) EYEKEEPER BIFOCAL SUNGLASSES A crescent shape on the bottom part of the lenses have magnification, which is for reading and close up work. And the other parts of the lenses have no magnification,which is