characteristic: Binoculars for adults night vision and day10x magnification,18mm eye lens diameter and 36mm objective diameterFMC (Fully Multi-Coated) red film lenses and high quality BAK-4 prisms binoculars deliver brighter vision in weak light condition (e.g. Twilight). Versatile Binoculars for Adults:High Binoculars for Bird Watching,Hunting,Traveling,feature a 3000M/9840Ft/3280yds large field of view,Delivers large and clear details,Tip:These binoculars have low-light night vision and can be used at night,But not in complete darkness. Professional optics the binoculars is fully multi-coated optics provide, All glass surfaces have multiple coatings,It provides 99.8% light transmission and improves color reproduction.the objective and improves light transmission,Image brightness and image sharpness. This binoculars are very easy to focus,Just adjust the binoculars to the correct position according to your eyes,Then rotate the center wheel to focus,Until the picture is clear.Diopter adjusting the imbalance vision of both eyes 1 to -3. The Binoculars adopts daily waterproof body rubber coating,comfortable grip.It can be used outdoors,Even in harsh environments.The hand-held places on both sides of the binoculars are made of unique anti-slip design,Not easy to slip off. Specifications: Magnification: 10 Eyepiece: 18mm Objective lens: 36mm Size: 18.8 * 14 * 11 CM Prism: BAK4 Coating: red film lenses