The ENLARGE 3X provides you with 3X magnification and adds versatility to any Red dot sight. The premium lenses offer a crisp sight picture with optimal eye relief. Magnification: 3X Exit pupil distance (inches): 2.75 inches (69.85 mm) Length: 3 inches (76.2 mm) Height: 3 inches (76.2 mm) Weight 10.25 ounces (290 grams) Impact resistance: 1000G Waterproof rating: IP67 Body coating: Matte black Glass coating: Multi-layer coated lens