The Ares G2 UHD spotting scopes were designed with advanced optical quality and ease of use in mind, so when you are trying to collect that trophy of a lifetime, your spotting scope is one thing you don't have to worry about. Athlon made that task as easy as optically possible with bright, razor-sharp imagery and a rugged, weatherproof design that's ready for any condition. They have UHD glass lenses for color resolution and contrast. The tough chassis is fog proof and waterproof and filled with Argon gas to prevent internal fogging and for better thermal stability.FeaturesAprochromatic Lens SystemUHD GlassESP Dielectric CoatingMagnesium ChassisXPL CoatingBak4 PrismAdvanced Fully Multi-CoatedArgon PurgedWaterproofRotating Ring