O-ring sealed for complete waterproof protection and Dry nitrogen-purged and sealed to prevent fogging, clouding and moisture damage Engineered with Dynamic Objective Focusing System that focuses by twisting the extensible sunshade Twist-up eyecups to adjust eye relief, which makes it ideal for all hunting and spotting activities Bonus Accu-grip handheld tripod which is for convenient handheld access or extension of tripod Compact and lightweight which includes tripod and carrying case for field protection