Unfortunately, the simple appearance shows but quite distinct chromatic aberration (chromatic aberration), so purple and yellow edges in high-contrast transitions (eg branches), but at this price you can not expect color-corrected lenses. Value could not be better so!
Addendum: After just 2 weeks an eyepiece broke off. It was hanging on a tiny piece of plastic. Considering the fact that it is intended for children, who have just advance the band leave somewhere against wumsen, I would say: bad design!