ESP Dielectric Coating is a multi layer prism coating that reflects over 99% of the light to your eyes bringing you a clear, bright image that displays accurate color reproduction. XPL Coating gives you an extra protection on the exterior lenses from dirt, oil and scratches Magnesium chassis give you the strength of a metal chassis while reducing the weight as much as 35% Advanced Fully Multi-Coated lenses gives you better light transmission to bring optimum brightness and true color across the entire light spectrum. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.