The Firefield Siege 10x50R is a tactical monocular perfect for viewing targets at long range. With fully multi-coated optics and an IP67 waterproof rating, the Siege 10x50R remains safe from outdoor elements. Featuring internal focusing and a rangefinding reticle, this tactical monocular allows for clear viewing and quick target distance identification. The Firefield Siege Monocular takes advantage of its twist-up eyecup to ensure ease of use for individuals with eyeglasses. The roof prism optical system is made from high-density BAK-4 glass, which eliminates distortion around the edge of the exit pupil when viewing. Included in Package Lanyard Objective lens cap Carrying case Lens cloth Features Tactical monocular 10x magnification 50mm objective lens diameter BAK-4 glass prism IP67 waterproof rating Fully multi-coated optics Internal focusing Rangefinding reticle Roof prism optical system Twist-up eyecup