The Nikon Prostaff 3S features an optical system created from lead- and arsenic-free Eco-Glass. Specially coated roof prisms and antireflection multicoated optics produce bright, high-contrast images with true color.
Objective lens diameter: 42 mm.
Field of view: 367 ft. at 1,000 yd.
Eye relief: 15.7 mm.
Dimensions: 5.9"L x 5.1"W x 2.0"H.
Weight: 20.3 oz.
Durable reinforced polycarbonate resin chassis protected by black rubberized armor.
Silver-alloy mirror coating on the mirror surfaces of the prisms for a bright and clear view.
Nitrogen-filled and O-ring sealed for water and fogproof performance.
Twist-up rubber eyecups for use with or without eyewear.
High-eyepoint design for long eye relief without vignetting, even when you are wearing eyeglasses.