The Newest Workhorse of Nikon Optics. The PROSTAFF 5 binocular is Nikon's latest addition to its dependable line of PROSTAFF optics. Waterproof and Fogproof. The Newest Workhorse of Nikon Optics - The PROSTAFF 5 binocular is Nikon's latest addition to its dependable line of PROSTAFF optics.
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