CHARACTERISTICS: - 10-year warranty presenting purchase invoice and stamped warranties. - Waterproof. - 25.4mm Aluminum Alloy Tube. - Filled with Nitrogen. - Weight 522 g MeoBright: Patented ion-assisted lens multi-coating applied to all optical surfaces. Developed by Meopta, MeoBrightTM ionization-assisted multi-coatings eliminate glare and reflections and provide industry-leading 99.7% light transmission per lens surface. MeoShieldTM: MeoShieldTM Ionization Assisted Coating protects external lens surfaces and offers increased resistance to scratching or abrasion in extreme conditions. MeoShieldTM meets military specifications for durability and surface hardness.