Fangrui Product Details 1. C2130 20x-40x Hd Astronomical Telescope With Multi-eyepiece 2. Detachable Finder, Lens Cover, Eyepiece, Refractor, Etc., It Is More Convenient To Wipe, High Researchability, And Easy To Be Familiar With The Principle Of The Telescope 3. Butt The Transfer Hole Of The Astronomical Telescope With The Hole Of The Tripod, Pass Through The Locking Button Of The Center Rod And Then Tighten 4. It Can Be Stretched To Adjust The Focus, The Length Of The Focus Is 17cm, And The Lens Barrel Can Be Stretched Through The Knob To Adjust The Focus To Facilitate Observation Of Near And Far Objects. 5. It Can Be Rotated In Multiple Directions, And The Vision Is Diversified. It Is More Clear And Convenient To See The Starry Sky In The Distance, And It Is Stable And Firm. 6. Acrylic Material Eyepiece, Good Transparency 7. Look At The Eyepiece And Rotate The Focusing Device With Your Hand Little By Little Until You Can See The Object To Be Observed, Then Adjust It Very Finely, And Finally You Can Clearly Observe The Object. 8. Long Focal Length Lens Barrel With Core-pulling Design, Smooth And Seamless 9. Material: Abs+acrylic 10. Component Description: Finder Mirror, Multiple Mirrors, Stable Tripod, Convenient Lock, Long Focal Length Lens Barrel 11. Applicable Age: Over 8 Years Old 12. Size: 50x31x42cm 13. Weight: 680g