PRODUCTS DIMENSION-Frame material: plastic, Lens width: 2" (51mm), Frame width: 5 5/16" (135mm), Lens height: 1 1/4" (32mm), Frame height: 1 7/16" (37mm), Bridge (DBL): 1/2"(13mm), Temple length: 5 7/16" (138mm), Spring hinge: Yes, Lenses: Aspheric, Head size: Narrow to Medium.Rx-able frame
EYEKEPPER READING GLASSES OPTICAL PERFORMANCE-the pupil distance(PD) is 59-63mm,the deviation for pupil distance(PD) less than 2mm,the deviation for strength less than 0.02,the deviation for lenses's horizontal line less than 1mm