Combining a compact twin-hinge design with superior optical performance, the black 10x25 Sapphire ED Binocular from Hawke is ideal to take with you on travel, outdoors, and urban exploration trips. The optics feature high-performance Extra-Low Dispersion (ED) glass to deliver crisp, true-color images of breathtaking landscapes, vistas, or cityscapes. With the fully multi-coated optics and high-resolution (Hi-Res) Silver Mirror BAK4 Roof Prisms with phase-corrected coating, you will get you exceptional transmission, clarity, resolution, and image contrast. And whether you focus on a close-up or faraway scenery, you can count on the wide 54° apparent angle of view to deliver a sizeable edge-to-edge field. Beyond optical highlights, the binocular provides a convenient center focusing and a diopter ring on the right tube, generous interpupillary range, and short 1.6m minimum focus distance. With its ultra-lightweight and durable magnesium housing, you don't have to worry about accidentally exposing the binocular to moisture or even dropping it into a water reservoir because it is nitrogen-purged to be water and fogproof. The body features an aesthetically appealing, ergonomic design. Its leatherette covering offers a secure hold and a pleasant handling experience. To help you with focusing and correcting for dioptric differences, the oversized focus knob and the diopter ring are knurled and can be easily adjustable even when wearing gloves. To accommodate anyone with a comfortable viewing position, the rubber eyecups feature a twist-out click-stop design. Also included are a strap, lens cloth, carry case, and protective lens caps. Prism type: Roof Magnification (x): 10 Objective lens diameter (mm): 25 Eye Relief (mm): 13 Exit Pupil (mm): 2 Field of view, real (degrees): 5.4 Field of view at 1000m (m): 95 Minimum focus distance (m): 1.6 Relative brightness: 4 Twilight number: 50 Waterproof: Yes Fogproof: Yes Optical coating: Fully Multi-coated Size: 103 x 101mm Weight (g): 241