10-30X50 High Power Magnification : High powered HD monocular telescope equipped with 10-30x zoom magnification, also a 50mm large objective lens provides you with a clear and bright image wider-field of view, It is a "Must have monocular telescope" for adults and kids, just enjoy the best view in your outdoor adventures, bird watching, hunting, hiking, camping, traveling, wildlife scenery, concert, sports, game, etc.High Contrast and Resolution Images:The zoom monocular telescope is equipped with a BAK-4 prism and FMC fully multi-coated lens, guaranteeing superior light transmission and brightness. The light transmission reaches up to 99.5% visibility. delivers more light to the view, reduces chromatic aberration and ghost images, and gives you a clearer, brighter, and more colorful view. it could help you see things in low light (can't see anything in complete darkness).Single Hand Focus Ergonomic Design:Handheld Telescope, Observe the close-up of the movement without sacrificing comfort - adjustable eyecup is twisted up and down and can be viewed comfortably with or without glasses. Easy to Focus with Single Hand. And the durable rubber outer with rubber grips makes it comfortable to use and prevents it from slipping out of your hands. Suitable for most weather and environments.Waterproof, Dust-proof, Shockproof:Waterproof with a resistant coating and O-ring sealed optics prism scope prevent moisture, dust and debris helping to keep the lens clear all the time, suitable for most weather and environments. A compact and sturdy body makes it withstand heavy weather. It can resist light water but can not be used in heavy rain for a long time or soaked in the water.