Employing many of the optical components found in premium spotting scopes, the 10x42 Legend Ultra HD Monocular (Black) from Bushnell delivers bright, sharp imagery in a compact, waterproof design. The ED Prime extra low-dispersion glass, fully multi-coated optics, and BAK4 prisms capture the visual moment with vivid clarity and contrast, even in low-light conditions. Patented Rainguard HD, a permanent, water-repellent coating, causes moisture from rain, snow, sleet, or condensation to bead up, scattering less light and delivering a clear, bright view. The magnesium housing is O-ring sealed and purged with bone-dry nitrogen to ensure waterproof, fogproof performance. The built-in Picatinny rail accepts a variety of lights and tactical sights.