Features:
1.Large 80mm Aperture
Extra-low dispersion (ED) glass maximizes light transmission for ultra-bright, high-contrast images, even in low-light conditions.
2.High Magnification (20-60x Zoom)
Adjustable zoom range for detailed observation, from wide-field landscapes to extreme close-ups.
3.ED (Extra-Low Dispersion) Optics
Virtually eliminates chromatic aberration for true-to-life color accuracy and razor-sharp clarity.
4.Fully Multi-Coated Lenses 
Premium anti-reflective coatings enhance light gathering (up to 92% transmission) and reduce glare.
5.Dual-Speed Focus System
Precision fine & coarse focus knobs for rapid target acquisition and micro-adjustments.