The Barska 10x50 Focus-Free Binocular has a fixed-focus design making instant viewing available when there's no time to be fumbling with a focus knob. A porro design with BK-7 glass and multicoated optics creates a viewing experience of clarity and high contrast while blue-tinted lenses help reduce glare. This focus-free binocular is an ideal all-around long-distance scope for sporting events, races, nature walks, wildlife observation, or any situation where a fixed-focus binocular could enhance the visual experience.• BK-7 Porro Prisms• Fixed Focus• Fully Coated Optics• Rubber ArmoringSpecificationsModel Number: AB10306Focus System: FreePrism Type: PorroPrism Glass: BK-7Magnification: 10xClose Focus: 25'Eye Relief: 15 mmObjective Lens: 50 mmExit Pupil: 5 mmField of View @ 1000 yds.: 367'Optical Coating: Fully CoatedWaterproof: NoFogproof: NoWeight: 26 oz. Included Accessories: Carrying Case, Lens Covers, Neck Strap, and Lens ClothMfr. Warranty: Limited Lifetime Warranty Blue-tinted lenses to reduce glare Ideal all-around long-distance scope Rubber armoring for durability | Barska 10x 50mm Focus-Free Binocular in Blue