Engineered to perform at its best under harsh conditions, the Crossover Binocular from Barska is truly the next generation of binoculars. Features BAK-4 prisms and fully multi-coated optics to provide you with remarkably bright images. Large center focus knob provides easy magnification adjustment. Nitrogen-purged design is 100% waterproof and fogproof, and non-slip, shock-absorbing rubber armor provides a firm grip. Twist-up eyecups and right-eye diopter let you customize these binoculars to your personal preference. Includes carrying case and neckstrap. Protected by Barska's Limited Lifetime Warranty.