Mini Pocket Monocular Scope Zoom Telescope

Specification: Type A: Magnification: 10X Objective lens diameter: 21mm Exit pupil diameter: 5.2MM Exit pupil distance: 16mm Prism material: roof prism, BAK4 material TYPE B: Magnification: 10X Color: Black Objective Lens Diameter: 25mm Ocular Lens Diameter: 15mm Prism material: roof prism, BAK4 material TYPE C: Magnification: 10X Objective lens diameter: 25mm Exit pupil diameter: 2.7MM Exit pupil distance: 16mm Prism material: roof prism, BAK4 material