20x52 high power binoculars deliver clear 20x magnification with 52mm objective lens. Built with premium BAK4 prism and fully multi-coated (FMC) lenses. It reduces light reflection and improves light transmission for bright images even in low light. 28mm large eyepiece offers comfortable eye relief to reduce eye strain during long-time viewing. IPX4 daily waterproof housing resists light splashes and dampness for outdoor use. Comes with smartphone mount adapter. You can capture photos and videos of bird watching, landscapes and concerts. Matte black sturdy casing provides secure grip and durable protection for hiking, hunting and sightseeing.