2.5X17.5MM HD Eye Protection Mini Telescope Single-Tube Telescope With Finger Buckle

​​Main Features: The telescope has an all-metal body, which is strong and durable. High quality composite achromatic optical lens, high quality anti-reflection film, real multiple, high definition. The telescope uses a 3-piece 2-set objective lens, so the imaging is clear and bright. Rotary focus, easy to use. Small size, just put on the finger to observe distant objects. Specification: Material: Metal Color :Black,Khaki,White Product size: 35X22mm Net weight: 20g Focusing mode: Rotation focusing Prism: Composite fully achromatic optical lens Coating: Blue film Eyepiece diameter: About 8mm Objective diameter: About 17.5mm Magnification: 2.5X Field distance: 8m/600m Field of view: 6.5 degrees Exit pupil diameter: 16mm Exit pupil distance: 13.5mm Package Included: 1pc* telescope Note: Please allow 1-2cm differences due to manual measurement. Due to the difference between different monitors,the picture may not reflect the actual color of the item. Thank you! No Retail Box.Packed Safely in Bubble Bag.