Argos binoculars come with superior quality and bright lenses that are Advanced Fully Multi-Coated for sharp contrast, true color and excellent light gathering. They also have Bak-4 prism glass that have our new ESP Dielectric coating and phase correction for color fidelity and sharpness. They’re Argon gas purged for waterproof & non-fogging. The extra durable magnesium chassis takes weight off your neck but at the same time stands up to the demands of hunting in any conditions