MARATHON BI030034R Waterproof Binocular with Reticle 7x50 M22E PREMIUM QUALITY PRISM- Barium Crown glass (BAK4). 7x magnification and 50mm objective diameter. FIELD OF VIEW- 394 ft @ 1000 yds / 131m @ 1000m. Individual focus model. LENSES- FBMC (Fully Broadband Multi-Coating) glass coated lenses for superior image brightness. Eye Relief of 22.5mm. WATERPROOF & FOGPROOF- Military grade and highly durable. ACCESSORIES INCLUDED- Neck strap, eye-cup protectors, objective lens protectors, carrying case, lens cloth and instructions.