The Vortex Diamondback binos feature rubber armor, which provides external protection as well as a non-slip grip; waterproof o-rings to prevent moisture from penetrating the lightweight magnesium chassis; a durable roof prism for compactness; and it's both shockproof and fogproof. You operate the binoculars with adjustable eyecups, a center focus wheel, and diopter. You can also mount it to a tripod. Enhance your outdoor adventure with the Vortex OPMOD Diamondback HD 10x42 Binoculars!