BIAL 16x52 Dual Focus Outdoor Monocular Telescope Optics Zoom Portable Scalable Telescopic Travel Golf Telescope 66m/ 8000m Mulit-coated optics upgraded version of the green AR The fully coated optics, meanwhile, guarantee superior light transmission and brightness, helping you see just about any target, whether you're searching for birds or trying to get a better view. This monocular offers an 16x magnification and a 52mm objective diameter. Rubber Armored for Rugged Field Use.Monocular Size: 145 x 52 x 40 mm easy focusing Suitable for Golf, Scope, Camping, Hiking, Fishing, Bird watching, Concerts, etc.