30x40 mm binoculars waterproof roof prism night vision bak4 fully multi coated 1500m9000m central focusing wide angle
Structuresbinoculars magnification30 objective lens mm40mm field range 6 typedimlight zoom binoculars materialmetal rubber plastic eye lensmm16 prism typebak4 field of view15009000 focus systemindependent focus central focusing magnification20x up maximum useful magnification30 objective diameter30 40mm optical systemlenses porro waterproof levelipx 2 ipx 1 ipx 4 ipx 3 optical coatingmulti coated eyecupsrotary liter motorno pc compatibleno formilit
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