Carson XM Series 10x42 Binocular 10x Magnification | 42mm Objective Lens Diameter | Weight: 1.5 lbs. Prism Type: BAK-4 | Fully Multi Coated Lenses | Eye Relief: 17mm Field of View: 314 feet at 1,000 yards | Waterproof and Fogproof | Nitrogen Purged Included Accessories: Pouch, Neck Strap, Lens Cover and Lens Cloth Backed by Carson's No Fault, No Hassle Warranty