Fangrui Product Details 1. 15-45x60 Zoom Single-lens Telescope High-definition Monocular Binoculars Outdoor Bird Watching Target Glasses 2. Model:1545x60 3. Structure:monoscope 4. Function Type:zoom Telescope 5. Specifications: 6. Magnification: 15-45x 7. Objective Lens Diameter: 60mm 8. Outlet Diameter: 17mm 9. Objective Lens Coating: Fmc Multi-layer Coating 10. Eyepiece Coating: Fmc Multi-layer Coating 11. Prism Material: Bak4 12. Weight: 878g 13. Size: 327x153mm 14. Features: High-definition High-definition, Large Caliber, Sufficient Light, Clear And Bright Image 15. Fmc Multi-layer Coating: Fmc Multi-layer Coating Is Used For Both Objective Lens And Eyepiece, Which Is A Good Coating Technology At Present, Which Effectively Improves The Image Color Of The Screen. 16. Zoom Zoom: Can Be Viewed In Any Multiple Of 20-60 Times To Meet The Needs Of A Variety Of Users 17. Nitrogen-filled Waterproof: Sealed By Lens Barrel, Internal Nitrogen-filled Waterproof, Effectively Adapt To Outdoor Rain And Snow Weather, Prolong The Life Of Telescope 18. Bak4 Prism: Bak4 Prism Material, Clear And Sharp Image, No Dark Edges Around, Comfortable To Watch 19. Optical Glass Lenses Are An Excellent Choice For Viewing Operas, Performances And Piano Concerts. Suitable For Sightseeing, Large Concerts, Football Matches, Racetracks, Outdoor Sports, Watching Games, Performances, Performances, Bird Watching, Watching Wildlife, Camping, Hiking, Adventure, Shooting, Archery, Fishing, Viewing Terrain, Appreciation Scenery, Etc.