Waterproof and fog-free with nitrogen gas filling.
The 8x40 Action Extreme ATB Binocular from Nikon is a general purpose optic that offers a weather-sealed housing and slip-resistant handling. Additionally Action Extreme ATB binoculars are equipped with a fully multicoated optical path that displays a 59.7 degrees apparent viewing angle. Nikon's Eco-Glass optics are made of environmentally-friendly lenses and prisms that don't contain lead or arsenic. Complementing the image quality and nitrogen-filled housing are Turn-and-Slide eyecups and a 17mm eye relief allowing the viewer to set a comfortable viewing distance even while wearing eyeglasses.
Prism Type: Porro Magnification: 8 x Objective Diameter: 40 mm Angular Field of View (Real): 8.2 FOV at 1000 yds: 143 m Close Focus Distance: 5 m Exit Pupil: 5 mm Relative Brightness: 25 Eye Relief: 17.2 mm Size (Length x Width): 138 x 187 mm Weight: 855 g