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)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 imageHD Focus Scope: Our monoculars feature High quality full multi-layer coated lenses， it’s designed with 10-30x 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 enjoymentWidely Compatible with Smartphone: Love to share what you see with friends and familiesThe smartphone holder perfect for almost all the smartphones on the market. Easy installing and easy sharing， a good candidate for your next tripComfortable and Design: design helps you focus on your target quickly and accurately with one hand. And the durable rubber armor with grain makes it comfortable for use， non-slip grip， and durable external protection from your hand