The SLC Binoculars from Swarovski combine extra-low dispersion (HD) glass elements and a range of proprietary optical coatings with a weather-resistant magnesium-alloy housing to create a multi-purpose set of glasses that delivers impressive image quality and durability. This configuration of the SLC displays an immersive 62Adeg apparent viewing angle; a long 16mm eye relief and multi-position twist-up eyecups enable a comfortable viewing distance for almost any observer.Fluorite-Containing HD Glass ElementsRoof Prisms with Phase CorrectionSWAROBRIGHT, SWAROTOP, SWARODUR CoatingsWide-Angle ViewingNitrogen Filled Fogproof/WaterproofOpen-Bridge ConfigurationMagnesium-Alloy Housing, Rubber ArmoredMechanical Center Focus System