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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° 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.
Objective lenses: 40mm diameter
Apparent viewing angle: 59.7° wide angle
Eco-Glass: lenses and prisms don't contain lead or arsenic
Fully multicoated optics
BAK4 prism glass
17mm eye relief
Use and Handling
Turn-and-slide rubber eyecups with multiple click-stop positions
Nitrogen-filled for fogproof and waterproof performance