42mm objective lens diameter367 feet wide apparent field of viewHigh-reflectivity silver-alloy replicate coatingLead and arsenic-free Eco glass materialTurn and slide rubber eyecups wit multi-clickNitrogen filled water-proof and fog-free construction22.3 ozlightweight body
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42mm objective lenses
Compact roof prism optical trail
Anti-mirrored image multi-coated optics enhance light transmission across all the visible spectrum
Top-reflectivity silver-alloy prism coatings cut back internal diffraction for improved light transmission