The Barska X-Trail Binocular Series was made for the great outdoors. Not only is this series a top optical performer, but the X-Trail Binocular is extremely rugged and offers an amazing value for quality optics and durability. Large objective lenses and fully coated optics work together to maximize light transmission and deliver astounding clarity, even in low light conditions. Whether being used for terrestrial or celestial viewing, the X-Trail Binocular Series from Barska will continually deliver outstanding viewing quality for many years. With 10x high magnification, this reverse porro prism binocular allows a compact design for large 50mm objective lenses. Features high magnification for long distance viewing, a durable rubber grip for easy viewing, and fold-down eyecups for use with or without eyeglasses.• Ruby Multi-Coated Optics• Fold-Down Eyecups• Center Focus Knob• Reverse Porro PrismSpecificationsModel Number: AB10176Focus System: CenterPrism Type: PorroPrism Glass: BK-7Magnification: 10xClose Focus: 33'Eye Relief: 20.0 mmObjective Lens: 50 mmExit Pupil: 5.0 mmField of View @ 1000 yds.: 324'Diopter: Right EyeOptical Coating: Ruby Multi-CoatedWaterproof: NoFogproof: NoWeight: 29.98 oz. Finish: Black MatteIncluded Accessories: Carrying Case, Lens Covers, Neck Strap, and Lens ClothMfr. Warranty: Limited Lifetime Warranty Reverse porro prism allows compact design for large 50mm objective lenses Durable rubber grip for easy viewing Fold-down eyecups for use with or without eyeglasses | 10x 50mm X-Trail Reverse Porro Prism Binocular in Black