Marine ready performance - 10x magnification with a 50 mm objective lens provides clear distant viewing. Eye relief is 23 mm and the exit pupil is 6.8 mm. Field of view is 396 feet at 1000 yards (132 meters at 1000 meters). This combination supports horizon scanning, marker identification, and distance estimation with comfortable viewing. Adapt to extreme environments - Completely waterproof and floats in water for reliable use in wet conditions and on deck. - Nitrogen purged for fog proofing, helping maintain a clear view in varying temperatures and humidity. - Built to be stable, comfortable to hold, and highly durable for maritime use. Bright and clear optics - Porro prism system delivers a wide field of view for easier tracking of moving objects. - Premium BAK4 prism and fully multi coated optics provide bright, crisp, high-contrast images in marine lighting conditions. Compass and rangefinder - Illuminated compass built in for direction location and navigation support. - Internal rangefinder helps determine distance and estimate the size of observed objects. Use scenarios - Sailing or motorboat navigation: scan the horizon for buoys, markers, other vessels, and potential hazards, using the rangefinder to estimate distance and the compass to orient your course. - Coastal wildlife watching: track birds or marine mammals along the shore or offshore, leveraging the wide field of view and distance estimation capabilities. - Dockside inspection and shore exploration: use the combined navigation tools to assess distances to points of interest and navigate confidently in unfamiliar coastal areas.