O-ring sealed for complete waterproof protection | Dry nitrogen- purged and sealed to prevent fogging, clouding and moisture damage | Multi coated optics for increased clarity | BAK-4 or BK-7 prisms for crisp images | Large knurled center focus knob for precise focusing | Non-slip diamond textured rubber design for a secure grip | Shock-absorbing rubber armor | Ideal for all outdoor activities in all-weather conditions | Includes carrying case and neckstrap | Limited Lifetime Warranty