HD Focus Scope: Our monoculars feature High quality full multi-layer coated lenses, it's designed with 8-20x High power magnification and 50mm wide-angled big objective lens, large eyepieces offer you a wide field of view when viewing the world, gives you the highest enjoyment;High Contrast and Resolution Images: High quality precision design featuring all glass high end optics, (BAK4 Prism & Multi-layer Film), this high power monocular telescope allows more light transmission and brightness and the light transmittance forming clear and colorful image;Waterproof Monocular: This HD waterproof, fog-proof, dust-proof, shockproof monocular, built in lens dust cover and o-ring sealed optics could prevent lens from dust/moisture/debris, ensures the living waterproof function, fit for the most weather and environment(note: it can not be used in a heavy rain for a long time or soaked in the water);Comfortable and Ergonomic Design: Ergonomic design helps you focus on your target quickly and accurately with one hand. And the rubber armor with grain makes it comfortable for use, non-slip grip, and external protection from your hand;Widely Compatible with Smartphone: Love to share what you see with friends and families? The smartphone holder perfect for almost all the smartphones on the market. Easy installing and easy sharing, a good candidate for your next trip