1.[ Monocular]This waterproof, fog-proof, dust-proof, shockproof monocular, built in lens dust cover and o-ring sealed optics could prevent lens from dust/moisture/debris. long-lasting 2.[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 3.[HD Focus Scope]Our monoculars feature High quality full multi-layer coated lenses, it's designed with 10x High power magnification and 42mm wide-angled big objective lens, large eyepieces you a wide field of view when viewing the world, gives you the highest enjoyment. 4.[Comfortable and Ergonomic Design]Ergonomic design helps you focus on your target quickly and accurately with one hand. And the rubber armor with grain es it comfortable for use, non-slip grip, and external protection from your hand