10-300x25mm Monoculars Professional Bak4 Lens HD Metal Lll Night Vision Monoculars Hunting Tourism Camping Features: 1. High magnification: the magnification is increased by 10 times to 300 times, providing a wider and ultra-long-distance observation experience. 2. Crystal clear: high-definition optical glasses, equipped with full-glass lenses and advanced multi-layer coating BaK-4 prism, to ensure that you enjoy a vivid and meaningful life in outdoor bird watching, traveling, sightseeing, hunting, etc. 3. Daily waterproof function 4. Support smart phones to take photos and videos. Specification: material: metal Lens material: BAK4 glass Magnification: 10-300x Objective lens diameter: 25mm Eyepiece diameter: 13mm Distance: 0.2-5000 meters FOV: 2-3.5 degrees Size: 121*32mm Weight: 118g Packing: 1 piece