High precision prism set with multi-layer coated lens and a large 60mm aperture outside diameter objective lens, which means greater light gathering capability, sharper imaging ability and a brighter and better field of view. [Normal use in rainy weather]: The single tube uses nitrogen-filled waterproof technology, which effectively prevents water from entering outdoors. Water in the mirror will fog up and mould and the telescope will basically be scrapped Monoculars prevent this embarrassment from happening. [Easy to use even with glasses] The monocular features a large 20mm eyepiece with a wide angle design and elevated eyecups that lift the eyecup height, making it easy for you to wear glasses without any discomfort. [Cost-effective combo package]: 18x 62 monocular with smartphone mount, multifunction tripod, monocular storage bag, anti-loss hand strap, Bluetooth camera remote control, lens wiper, so you can enjoy the best outdoor adventure best to watch or observe the beauty from a distance.