Foster Grant Men's Kramer Rectangle Blue Light Reading Glasses, Matte Black

Designed for digital use: stylish E. Reader glasses uniquely designed for more comfortable reading and browsing on your phone, computer or tablet, Superior eye protection: features patented lens coating to help reduce up to 34% potentially harmful blue light* emitted from screens. Harmful blue light refers to the 415-455 nanometer range of the visible light spectrum. The percentage represents the average amount of harmful blue light blocked at 5 nanometer increments in this range, Comfortable screen reading: designed to reduce eye strain during long periods of browsing by reducing screen glare and improving contrast, High-quality design: made of high-quality materials, including scratch- and impact-resistant lenses and spring hinges, for long-lasting use, Choose your magnification level: choose your magnification with levels ranging from +1. 00 to +3. 25, Includes case: comes with an included case to keep your E. Readers in tip-top shape while not in use; also comes with cleaning cloth, Measurements: lens Width 51 mm, Bridge 20 mm, arm 140 mm, Polarization type: non polarized.