The Cassini C-1250 features 50mm objective lenses and brings images 12 times closer to you than the naked eye. The C-1250 is a member of the Astro Binocular Series featuring large 50MM objective lenses and excellent power. The prisms are positioned in a Porro prism design affording them increased depth perception over other binocular designs. Additionally the C-1250 features fully coated optics for maximum clarity and glare reduction. The rubber covering makes the C-1250 water resistant with a comfortable grip. The full range center focus, right eye adjuster and binocular tripod socket complete the system. Included with the Cassini C-1250 is a carrying case, neck strap, lens cloth and protective eye caps. The Cassini C-1250 features fully coated optics for improved glare reduction. The Cassini C-1250 12x50mm Astro Binocular Features and Benefits: Water Resistant Comfort Grip Rubber Armoring Full Range Center Focus Fold Down Rubber Eye Guards Binocular Tripod Socket Shoulder Case and Strap Neck Strap Lens Cloth The Cassini C-1250 12x50mm Astro Binocular Specifications: 12x Power 50mm Objective Lenses Fully Coated Optics Linear Field of View: 275′ @ 1000yds Angular Field of View: 5.2° Minimum Focus Distance: 25′ Exit Pupil Size: 4.2mm Eye Relief: approx. 8mm - 10mm Interpupillary Distance: 59mm to 75mm Relative Brightness Index: 17.36 Twilight Factor: 24.49 One Year Limited Warranty