Extreme terrain. Unimaginable conditions. Both test your mettle—and your optics. With a well-earned reputation for pushing the limits of optical performance, the Razor 10x42 HD binoculars step up and out on other binoculars in their class. Small, light, bright, strong, and packed with the best quality, hand-selected prisms and premium HD extra-low dispersion glass available today. Nothing else comes close.