10x50 WA X-trail, Ruby Lens, Porro prism binoculars, Multi-coated optics, Wide angle models provides a wider field of view, Large objective lenses, Rugged and durable rubber armor with non-slip grip, Large objective lenses which means they will maximize light transmission for bright clear images even in low light conditions, Ideal for all outdoor activities and sporting events, Includes carrying case and neckstrap, Barska's Limited Lifetime Warranty Features: A full line of porro prism binoculars with a variety of magnifications Quality coated optics for outstanding performance Wide angle models provides a wider field of view Large objective lenses maximize light transmission for sharper images Rugged and durable rubber armor with non-slip grip Ideal for all outdoor activities and Specifications: Magnification: 10x Objective Lens(mm): 50 Prism Type: Porro Prism Glass: BK-7 Exit Pupil(mm): 5.0 Optical Coating: Multi Focus System: Center Field of View (ft@1000yds/m@1000m): 367/122 Close Focus(ft/m): 20/6 Eye Relief(mm): 12.7 Weight (oz.): 29.45