Glasses for Computers Blue FilterThe Montana Readers eyeglasses: Lensbox size: 52 mm. Temple size: 140 mm. Bridge size: 16 mm. Hinge Flex. Blue light filter. Hinge flex. Lens type aspheric. Reader Glasses with Special Filters PC Glasses for computers with a blue filter will protect you from the blue light emitted by digital screens or if you are watching television, using your smartphone or tablet Overexposure to blue light affects our sleep, productivity, and overall health. This

Perfect to carry in a handbag

Easy to maintain

Lens Type: Blue-blocking (470nm) lenses

this makes it extremely easy to write underneath – and not just for crosswords

- Large 3-1/8-in x 15/16-inch LCD displays with clear black digits

Weight: 205 g (including the battery)

Lens Type Galilean

Dimensions: 5

Color Black Mix

Only for use with the Visolux Digital XL

•Speaks in English

They incorporate integrated side shields for enhanced safety