10-300x40mm Monocular Telescope Professional Bak4 Lens HD Metal Lll Night Vision Monocular Telescope For Hunting Tourism Camping1. High magnification: the magnificationis upgraded 10 times-300 times, it can provide a wider and ultra distance observation experience.2. Crystal clear view: High-definition optical glasses, equipped with all glasses lenses and BaK-4 prisms with high-grade full multi-layer coating, can ensure that you enjoy a vivid and meaningful life in outdoor bird watching, traveling, sightseeing, hunting, etc.3. Daily waterproof function4. Supports smartphone for taking photos and recording videos.Specifications:Material: MetalLense material: BAK4 GlassMagnification:10-300xObjective Diameter:25mmEyepiece Diameter: 13mmDistance: 0.2-5000metersFOV:2-3.5 degreeSize:121*32mmWeight:118gPacking:1 pc