1. The refractor has a strong focal length, a large field of view, and a strong resolution.Multilayer optical coating,Refractive optical system,high light transmittance, and enhanced image brightness and clarity.Aluminum tripod 2. It is very suitable for astrometric work, and it performs well in obing the moon, planets, and binary stars. Easy to ob the ground view, very suitable for enlarged photography of the moon and planets 3. The is suitable for beginners or children. It is easy to install and ob for beginners. It will encourage children to like learning space, get close to nature and stay away from electronic products. And provide a wonderful holiday or birthday gift idea for children who like science and astronomy. 4. about quality after receiving this space , please for the first time. We provide a high standard of 24/2163 ice, and will do our best to solve it for you until you are satisfied.