Such as the rainbow telescope is easy to use, quite good, and quite a lot of praise. For example, adult HD 10 km binocular non-infrared night vision 1000 is clear at high magnification, convenient to carry, small and exquisite, and the scenery is very clear. Telescopes are really useful for large-scale field activities. It can expand the perspective of distant objects to the eyes, so that we can see distant objects and scenery clearly. Rainbow telescope is very good.