Steiner Optics HX Series Binoculars - Versatile Optics, Shockproof and Waterproof Binoculars for Precision in Hunting HD OPTICS - Incorporate the finest index-matched glass and advanced lens coatings for best-in-glass image clarity. FAST CLOSE FOCUS - Central focusing wheel requires minimal rotation for quick, absolute sharpness from close up to infinity. 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. N2 INJECTION SYSTEM - Seals 14-psi pressurized dry nitrogen inside the optic, for fogproof clarity in any condition - from artic cold to desert heat. 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.