The 10x42 Excursion HD Binocular from Bushnell utilizes compact roof prisms and an open-bridge design to create a capable optic that is comfortable to hold and use for prolonged periods. Anti-reflective fully multicoated lens surfaces and reflective PC-3 prism coatings increase the amount of light getting through the optical system. This increased light transmission produces high-contrast images that are bright and clear, with minimal distortion across the entire wide-angle field of view. BaK-4 glass is used to enhance colour fidelity, contrast and sharpness. PC-3 phase coating provides colour fidelity and clarity of image. The housing is nitrogen-filled and o- ring sealed for water and fogproof performance in all weather conditions. A large and lockable center focus wheel is easy to use when it's cold or wet, or when wearing gloves. Textured rubber armor provides a non-slip grip. The binocular is tripod mountable with optional adapter for hand free operations. Moisture resistant neoprene carrying case is provided along with the binocular for safe storage and easy.