- Zoom adjustment: Variable magnification from 10x to 30x for flexible viewing of distant subjects. - 30 mm large objective lens flatness thread: The 60 mm large objective lens increases brightness. The inner wall is coated with spray matte paint to prevent light scattering inside the objective cone and reduce stray light. Dust-proof grease coats the lens to absorb dust and particulates. - 15 mm large wide-angle eyepiece: Eyepieces are implemented with coated optical elements, including designs using blue-coated components. The system is composed of modular parts and fixed pieces. In low light, observed objects with weak illumination remain visible and the image does not appear completely dark. - Optical lens green film coating: Multi-layer synthetic coating across the full optical system provides clear viewing, improved sharpness, and a wider, flatter field of view. The coating enhances eye comfort and color fidelity. Use scenarios - Bird watching and wildlife observation at mid to long range, where clear brightness and adjustable zoom improve subject detection and detail. - Outdoor activities such as hiking, sightseeing, or sports events, where a compact, bright optic with a wide field of view helps track moving subjects. - Low light or dusk observations, including night-time wildlife or early evening scenery, where brightness and color accuracy aid visibility.