1.10×30 Magnification and 50mm Objective Lens: This monocular is equipped with 10×30 high magnification, which is perfect for long-distance viewing. It has a wide field of view, expanding your adventure to more possibilities. 2.Advanced FMC Lens and BAK-4 Prism: The HD monocular adopts 22mm BAK-4 optical prism and FMC (Fully Multi-Coated) lens, which enhances the light transmittance of the monocular and reduces unnecessary light reflections, presenting a clear and sharp image. 3.Monocular and IPX7: The comfortable and portable hand strap helps prevent the lightweight monocular from slipping out of your hands. The IPX7 nitrogen-filled design makes the monocular waterproof, fog-proof and shock-proof no matter what weather conditions. 4.Comfortable and intimate visual experience: The long eye relief provided by the rotating eyecup gives you an unparalleled comfortable viewing experience outdoors.