1.Smartphone telescopes are made with advanced optical objectives that allow you to visualize sharp images in vivid colors. 2.The BAK-4 prism and FMC lens make for a powerful combination, ensuring that you won't miss a single detail when observing or watching sporting events. With its Good- refractive index, exceptional transparency 3.This 10-30×42 ZOOM telescope is suitable for both adults and children. It provides clear and bright images and vision, and is also suitable for activities such as mountaineering, hiking, animal observation, camping, tours, concerts. 4.Minimal scattering, the BAK-4 prism provides breathtakingly clear and bright visuals, allowing you to fully enjoy the experience of using the telescope. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store