Boshile 10x36 mm binoculars waterproof roof prism night vision bak4 fully multi coated 140m1000m central focusing wide angle
Structuresbinoculars magnification10 objective lens mm36mm field range 61 typenormal dimlight zoom binoculars materialmetal rubber plastic eye lensmm23 prism typebak4 field of view1401000 focus systemindependent focus central focusing magnification10x to 149x maximum useful magnification10 objective diameter30 40mm optical systemlenses porro waterproof levelipx 4 ipx 3 ipx 2 ipx 1 optical coatingfully multi coated eyecupstwist up rotary liter formilit