The Firefield Siege 10×50 Monocular with 10x magnification and a robust 50mm objective lens designed for incredible light transmission and a crystal clear field of view even when dusk sets in. With IP67 waterproof protection and a rubber armored body, the Siege is ready for any outdoor adventure. The Firefield Siege 10×50 Monocular is compact enough to fit easily in a cargo pocket or backpack but delivers big enough on performance, with standard ¼-20 screw mount compatibility, to be your on-the-go spotting scope. Additional features include a field of view of 367 ft. at 1,000 yards, twist-up eyecup and an internal focusing lens. The Firefield Siege 10×50 Monocular includes lens covers, a lens cloth, a lanyard and a protective carrying case.