Waterproof, fog-free Nikon Marine 10X50 CF WP Tundra Binocular are ideal for outdoor use. Bright, beautifully defined images are delivered by superior quality, multilayer-coated objective lens. Originally designed for use under severe environment, for example, for marine use, nitrogen gas provides added resistance to the effects of changes in climate or weather. Furthermore, the rubber armouring ensures reliable performance and a comfortable grip, even during prolonged use. These binoculars ensure worry-free viewing of the great outdoors.