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