Category & Caliber or Subcategory: Gear Sights and Optics Buy now! Magnification: 3x Eye Relief: 2.2" Fog Resistant: Yes Waterproof: Up to 33 feet Mount Compatibility: Mil-STD-1913 Rail and 1" Weaver Length: 3.9" Width: 2.2" Height: 3.3" Weight: 11.2 oz.