Konus Fission Pro 3.0 18x25 Reflex Red Dot Sight 1x25 4 MOA Red Dot. This highly advanced red dot is also waterproof and is equipped with a 12-hour auto shut-off system to prevent battery consumption. Specifications for Konus Fission Pro 3.0 1x18x25 Reflex Red Dot Sight: Manufacturer: Konus Color: Black Finish: Matte Magnification: 1 x Objective Lens Diameter: 18 - 25 mm Objective Window Size: 25x18 mm Reticle: 4 MOA Red Dot Illumination Color: Red Brightness Settings: 8 Eye Relief: Unlimited Emitter Type: Open Battery Type: CR2032 Battery Life: 2000 hours Water Resistance Level: Waterproof Length: 1.8 in Weight: 2.11 oz Mount Type: Weaver Attachment Type: Weaver Picatinny Package Contents: Konus Fission Pro 3.0 1x25x18 Reflex Red Dot Sight Konus 7205: Fission Pro 3.0 25x18 Reflex Red Dot Sight 1x25 4 MOA Red Dot