Tube telescope 10-30x25 infinite zoom high-definition outdoor telescope Magnification: 10-30 times Objective lens diameter: 25mm Objective lens outer diameter: 33mm Prism material: BK4 Focusing method: eyepiece rotation plus intermediate stretching continuous zoom The shortest size: 127mm32mmX32mm; Longest size: 200mm32mm Field of view: 10X: 3.530X: 2.0 Mirror body material: aviation aluminum/PVC structure, soft rubber trim (both durable and comfortable to the touch) Focal length: Rotate through the eyepiece, adjust the movement handwheel for smooth and precise focusing Coating: The objective lens is multi-layer broadband blue-coated film, and the inner side is coated with a colorless infrared return film to solve the problem of insufficient lighting after changing to a large magnification.Make the scene more clear and transparent A real portable telescope with small size and high magnification! ! ! Can be used for tourism, large-scale concerts, ball games, racetracks, fishing. Packing: plastic steel model 10-30*30 high-definition standard version telescope + silver tripod + mobile phone clip