Barska Colorado 20x50mm Porro Prism Binoculars Black. These Barska binoculars feature an astounding 20x magnification perfect for long-distance viewing of terrestrial objects in excellent detail. A BK-7 porro prism brings high-definition clarity to the binoculars which feature fully-coated optics and a wide 50mm objective lens. For even more precise views over great distances Barska has made the Barska Colorado 20x50 Porro Prism Binoculars adaptable to a tripod so you'll always have a stable viewing platform wherever you take the binoculars. The porro prism binoculars are comfortable and fast to use with an ergonomic center focus dial precision diopter adjustment capabilities and fold-down eyecups (perfect for users with glasses). Experience the Rockies at long range with the Barska Colorado 20x50 Center Focus Binoculars. Specifications for Barska Colorado 20x50mm Porro Prism Binoculars: Manufacturer: Barska Color: Black Magnification: 20 x Objective Lens Diameter: 50 mm Prism System: Porro Prism Material: BK-7 Image Stabilizer: No Eye Relief: 7.2 mm Exit Pupil: 2.5 mm Field of View Linear: 168 ft at 1000 yds Field of View Angle: 3.2 degrees Optical Coating: Fully Coated Binoculars Focus System: Center Focus Twilight Factor: 31.62 Close Focus: 29.5 ft Weather Resistance: None Length: 6.89 in Weight: 29.45 oz Finish: Black Fabric/Material: Rubber Included Accessories: Carrying Case Neck Strap Lens Cloth Lens Cover Magnification Type: Fixed Tripod Adaptable: Yes Size: Medium Compass: No Eyecups Types: Fold Down Housing/Frame Material: Aluminum Nitrogen Filled: No Case: Yes Strap: Yes Zoom: No Brightness Index: 6.25 Armoring: Rubber Armored Features of Barska Colorado 20x50 Binoculars Focus System Center Prism Type Porro Prism Glass BK-7 Magnification (Fixed) 20x Close Focus (ft/m) 29.5/9 Eye Relief 7.2mm Objective Lens 50mm Exit Pupil 2.5mm Field of View (ftat1000yds/mat1000m) 168/56 Diopter Right Eye Optical Coating Fully Coated Waterproof None Tripod Adaptable Yes Product Weight 29.45 oz. Finish Black Matte Package Contents: Barska Colorado 20x50 Binoculars Carrying Case Neck Strap Lens Covers Lens Cloth Barska CO10676: Colorado 20x50 Binoculars