The lightweight and compact design of the Solo Monocular makes it easy to carry high quality optics in your pocket or on a lanyard. Fully multi-coated optics enhance light transmission, providing a bright and clear image. This device is built rugged with rubber armor and a waterproof seal for truly "take anywhere" portability. The Vortex(R) Solo Monocular features an adjustable eyecup for individualized comfort. FEATURES: Fully multi-coated lens increases light transmission for a brighter image Rubber armor gives you a non-slip grip and added protection O-ring seals lock out moisture, dust and debris Nitrogen gas purging prevents fogging Adjustable eyecup for personalized comfort Light and compact design Includes neck lanyard and carry case Manufacturer's Unlimited Lifetime Warranty SPECS: Magnification: 10x Objective Lens Diameter: 25mm Prism Type: Roof Linear FOV at 1000 Yards: 315' Angular FOV: 6deg Exit Pupil: 2.5mm Eye Relief: 14.5mm Close Focus Distance: 16.4' Dimensions: 4.4" x 2.2" Weight: 5.6 oz.