Structuresbinoculars eye relief mm20 resolution1000 magnification180 objective lens mm50 field range 5 typezoom binoculars materialpu leather rubber eye lensmm21 batteryna focus systemcentral focusing exit pupil diameter mm5 best usehiking magnification20x up focal lengthmm20 optical coatingmulti coated brandmogo forgeneral use bird watching hunting featureszoom waterproof night vision roof prism carrying case generic fogproof high definition