1.15mm large wide-angle eyepiece: Some optical lenses, coated blue tape evepieces are adopted. The system consists of a part and a single piece. At night, when observing an object with weak light, the object appears in a black state and cannot be clearly observed. 2.30mm large objective lens flatness thread: The 60mm large objective lens increases the brightness. The spray matte paint on the inner wall of the objective lens effectively prevents light from scattering within the objective lens cone and eliminates stray light. It is coated with dust-proof grease to absorb dust and particulate matter. 3.Optical lens Green film coating: Adopting multi-layer synthetic coating technology for the entire optical lens, it provides a comfortable viewing experience, making the scene easy to see. It increases the sharpness of the imaging, widens the transparent band and flattens the vision field, improves the eye protection effect and enhances color reduction. 4.Zoom adjustment: Allows for 10 - 30 times random zoom adjustment.