Telescope for Adults Astronomy, 70/400mm Refractor Telescope for Kids Beginners, Portable Telescope with Tripod Carry Bag Phone AdapterHigh Transmission OpticsThe top rated telescope with 400mm(f 5. 7) focal length and 70mm(2. 75") objective Len ,made of fully coated optics glass lens and high transmission coatings which could create clear and bright images. Professional adults telescope for viewing planets,land and moon. Optimum MagnificationThe adult telescope has 2 replaceable K series eyepieces (K6mm 67X, K25mm 16X) enhance the clarity of the telescope. 1. 5X Erecting lens & 3X