The Athlon Argos 10x50 Phase Coated Binocular has an open-bridge style some hunters prefer for its secure ergonomic one-handed grip and comfortable any weather condition. The binocular comes with superior quality and bright lenses that are advanced fully multi-coated for sharp contrast, true color and excellent light gathering. It also has Bak-4 prism glass that has the new ESP Dielectric coating and phase correction for color fidelity and sharpness and an argon purged waterproof, non-fogging polymer composite chassis that takes weight off your neck but stands up to the demands of hunting.