INCLUYE OCULAR ZOOM 16-48x. The Razor HD far exceeds performance expectations and earns high praise in the field. You are sure to appreciate the Vortex HD system with a sophisticated triplet apochromatic lens system that incorporates precisely ground HD optical glass to enhance image resolution and eliminate virtually all chromatic aberration. That means you get an amazing distortion-free view with impressive edge-to-edge sharpness. The Razor’s tough magnesium alloy body is lightweight, the optics are waterproof and fogproof, and the Vortex VIP warranty will keep the Vortex Razor in the field for generations.