Bring the world closer and enjoy a detailed view with “Sky Genius” 10 x 50 powerful binocular, with a magnification 10x this binocular can bring subject 10 times closer, with the object lens diameter 50mm, it allows more light to come through, more clear details, even at low light condition, and multi layer-coated aspherical lenses elements for Light reflection and minimal distortion, better image brightness, contrast and quality. With field of view angle (367Ft / 1, 000Yds) it has a large field of view, good for watching fast-moving things. Built with a rugged exterior, come with carrying case and strap make it easy for carrying. Advantage20mm diameter eyepieces, more comfortable patible with tripod Fully adjustable to adults alike Clear vision Ideal magnification 10 x 50Great distance range Amazing mate design, with grip areas for an easy hold Specification: Model: 10 x 50POWER: 10xOBJ. LENS DIA. : 50mmTYPE OF PRISM: BK7NUMBER OF LENS: 4 pieces 3 groups LENS COATING : MC FOCUS SYSTEM: Cent. FOCUSING LENS: Eye. EXIT PUPIL DIAMETER: 5 EXIT PUPIL DIST. : 12FIELD OF VIEW: Angle: 5. 5°, 367 ft./1, 000Yds(122M/1, 000M)MIN. FOCAL LENGTH: 5m/16. 4ftRELATIVE BRIGHTNESS: 25 TWLIGHT INDEX: 17. 9RESOLUTION: ≤ 7. 5"DIOPTER SYSTEM: Right eyepiece DIOPTER COMP. : 4INTERPUPILLARY DIST. : 56mm~74mm EYECUPS SYSTEM: Twist-up UNIT DIAMENSION: 7. 48 x 6. 69 x 3. 97 inch UNIT WEIGHT: 1. 76 lb. Application: Outdoors, bird watching, climbing, hiking, sightseeing, traveling, sport Game, concerts, star gazing, etc. In the Box: 1 * Binocular1 * Pouch1 * Strap1 * Cleaning cloth4 * lens caps TIPS: If the binoculars has any problem, please contact us, you would get a free replacement without return.