80100 high-power monocular ocular80 magnification and 100mm objective diameter monocular, no black stripes, excellent light transmission and image brightness, a larger and brighter field of vision, better viewing experience.Bak4 Prism Advanced BAK-4 optical prism, with adjustable eye cup and focusing wheel, easy to carry, one-handed quick focus, easy to zoom to obtain superior vision, bring you distant scenery.Waterproof and easy to useThe use of high-quality materials, can be waterproof and anti-fog life, non-slip rubber strip convenient for better grip, can be used in rainy weather or humid environment.Compatible with smart phonesEquipped with smart phone holder, tripod and connector, easy to install, can quickly connect to the mobile phone. Ideal for getting HD images or videos to share with friends while birding, hunting, hiking, camping, touring, wildlife, scenery, etc.