The 10x42 Legend Ultra HD Monocular (Black) from Bushnell delivers exceptional field performance with bright, razor-sharp imagery and a compact, waterproof design that succeeds in the most challenging conditions. The ED Prime Extra Low Dispersion glass, fully multi-coated optics and premium BAK4 prisms capture the visual moment with vivid clarity and contrast, even in low-light conditions. Stacked lenses are protected by the ultra-effective Rainguard HD hydrophobic coating for the clearest view possible in foul weather or even condensation from breath. The housing is fully sealed, and purged with bone-dry nitrogen to ensure all-weather performance. Regardless of the climate; the optic's internal mechanism is well protected from the negative effects of moisture. ED Prime Extra-Low Dispersion fluorite glass delivers superb color resolution and contrast, and practically eliminates chromatic aberration and color-fringing to bring out the details in low-light conditions. The patented Rainguard HD is a permanent, water-repellent coating that causes moisture from rain, snow, sleet or condensation to bead up, scattering less light, and delivering a clear, bright view. The built-in Picatinny rail accepts a wide range of accessories.