Vortex Razor 8x42 Binocular, 3 years old, display model only. Never used in the field. MSRP $849. Selling for $450. OPTICAL FEATURES XD Lens Elements Extra-low dispersion (XD) glass enhances resolution, color, and contrast. XR Lens Coatings Vortex XR proprietary anti-reflection lens coatings increase light transmission with multiple coatings on all air-to-glass surfaces. Phase Correction Used on roof prism models only--coating enhances resolution and contrast.