Encourage kids to love learning about space, great for kids who love science and astronomy! The teles-cope for astronomy comes with 2 replaceable eyepieces: 6 & 20mm. premium ABS and aluminum alloy, very lightweight and portable, long serving for time. Highly portable and ready for your digiscoping adventures. 300mm focal length & 70mm fully coated optics glass lens with high transmission coatings creates images and protect your eyes.