Steiner Optics GS3 Game Sensing Rifle Scope - Waterproof Hunting Scope for Rifles, Perfect for Varmint and Big Game Hunting COLOR ADJUSTED TRANSMISSION (CAT) amplifies contrast in the peak human vision sensitivity range, to spot game in any environment. NANO PROTECTION hydrophobic molecular coating creates a lens surface so smooth water sheets off and dirt, dust, snow and fingerprints are repelled for easy cleaning and a clear view. PLEX S1 RETICLE helps determine holdover for distance and cascading dots/lines compensate for wind. WATERPROOF - Submersible to 33 ft, depend on O-ring sealed, nitrogen filled construction to provide moisture free performance. HERITAGE WARRANTY - We stand behind our products. Period! We will repair/replace defective products at no charge for the lifetime of the product. Warranty does not cover damage, loss or theft.