HD High Power Monocular Telescope and a wide field of view, let you have the best view in outdoor adventures, ideal for outdoor enthusiasts and wilderness explorers, a handheld and must-have for bird watching, wildlife, hunting, hiking, mountaineering,camping, surveillance and traveling. High Contrast and Resolution ImagesThe zoom telescope is equipped with BAK-4 prism and fully multi-coated lens, guaranteeing superior light transmission and brightness. The light transmission reaches up to 99.5% visibility. The built-in low-light-levelnight vision helps you see things in low light. An adjustable eye cup also allows you to twist up and down easily and rapidly for optimal viewing even while wearing glasses. Waterproof Anti-fog Anti-slip Design Waterproof, Monocular telescope has O-ring sealed for complete waterproof protection. prevent moisture, dust and debris to keep it clear all t