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Take a look at the Discovery Gator 10x50 binoculars

Promo video of the children's Levenhuk Rainbow 2L PLUS microscope

Promo video of the Sky-Watcher Capricorn AC70/900EQ1 telescope

Learn more about this great children's microscope

This article is devoted to the evolution of the binoculars' optical schemes

All about choosing binoculars: numbers, field of view, exit pupil, prisms, lens coating, focus