Marathon BI030017 Waterproof Marine Military Grade Binocular with Compass 7x50. Compact for sports, safaris, tracking, mountaineering, bird watching and other outdoor activities PREMIUM QUALITY PRISM- Barium Crown glass (BAK4). 7x magnification and 50mm objective diameter. FIELD OF VIEW- 370 ft @ 1000 yds / 122m @ 1000m. Individual focus model. LENSES- Magenta (ruby) Coated Lenses providing superior image brightness WATERPROOF & FOGPROOF- Military grade and highly durable. ACCESSORIES INCLUDED- Built-in Compass Neck strap, eye-cup protectors, objective lens protectors, carrying case, lens cloth and instructions.