NIKON Action Extreme 16x50 ATB Black

Bright, multicoated lenses and BaK4 high index prisms: Deliver bright, high-resolution images.
Smooth central focus knob: Fast range of focus for quick viewing. No bird goes unseen.
Ergonomic body design: Comfortable for extended viewing.
Waterproof/fogproof: Nitrogen filled and O-ring sealed.
Long eye relief: For a clear and comfortable view, especially for people who wear eyeglasses.
Unique click-stop, twist-out eyecup design: Delivers both long eye relief and variable eye relief to customize these binoculars to your eyes and accommodate glasses.
Durable and protective, rubber-armored coating: Provides a sure, non-slip grip, wet or dry.

Features:
Focusing System: Central Focus
Magnification: 16 x
Objective Diameter: 50 mm
Angular Field of View (Real): 3.5 °
Angular Field of View (Apparent): 52.1 °
FOV at 1000 yds: 183 ft
Close Focus Distance: 23 ft
Exit Pupil: 3.1 mm
Relative Brightness: 9.6
Eye Relief: 17.8 mm
Size (Length x Width): 7 x 7.7 in
Weight: 36.7 oz
Interpupilary Distance: 56 - 72 mm
Waterproof/Fogproof: Yes
Prism: Porro
Manufactured responsibly with lead and arsenic-free Eco-Glass