Vortex Optics Solo Monocular 10x36 10x magnification and 36mm objectives lens, the Solo Monocular is a small, lightweight optic with fully multi-coated lenses, increasing the light transmission and resolution giving you the clear, crisp images you want. The monocular is fully rubber armored providing a non-slip grip to the user and making it extremely durable. Nitrogen purged and o-ring sealed, the Solo delivers waterproof and fogproof performance in any environment. The adjustable eyecup allows for comfortable viewing with or without glasses. The 36mm Solo comes with a versatile, multi-position utility clip for quick attachment to your equipment or clothing.