Palm-sized and protected in black rubber armor, the 10 x25 HD Monocular from Eyeskey Optics offers genuine quality and value for anyone interested in owning and using a pocket monocular, it is suited to birding, hiking, hunting, travel, sightseeing, concerts, sports, theater ? anywhere you want a good look at distant details. For that matter, with its close-focus distance of just 19.69 feet, the monocular gives you a good look at nearby objects, too. Power 10X Obj. Lens Dia. 25mm Type of Prism Roof /BAK4 Number of Lens 8Pieces 6Groups Lens Coating FMC Focus System Cent. Focusing Lens Int. Exit Pupil Diameter 2.6mm Exit Pupil Dist. 14.22mm Field of View 5.7? 299.4FT@1000YDS 99.8M@1000M Weather Proof 1m/30 minute Water Proof Eyecups System Twist-up(Metal Meterial) Accessories Monocular, Pouch, Strap,Cleaning Cloth, Manual Unit Dimension 115X48X43mm Unit Weight 164g