Bresser OMNI-4 Red LED Inverted Waterproof Precision Reflex Sight30 MOA Black. This unconventional approach to an open sight limits the exposure of the lens to dirt and maintains the devices functionality even when it is raining. The compact sight has unlimited eye relief fully multi-coated optics and a high-efficiency bright red LED that guarantees exceptional battery life. It is both shockproof and splashproof for added durability. Specifications for Bresser OMNI-4 Red LED Inverted Waterproof Precision Reflex Sight: Manufacturer: Bresser Color: Black Magnification: 1 x Reticle: Dot Eye Relief: Unlimited Adjustment Click Value: 1 in at 100 yds Emitter Type: Open Parallax: 30 yds Battery Type: CR2032 Battery Life: 500 Hours Water Resistance Level: IP55 Weight: 0.3 lb Magnification Type: Fixed Red Dot Sights-Footprint: Not Applicable Mount Type: Weaver Gun Rail: Weaver Picatinny Features of Bresser OMNI-4 Red LED Inverted Waterproof Precision Reflex Sight: Description Bresser OMNI-4 Red Inverted Reflex Sight Item Number 23-20400 Recticle Color Red Battery Life 500 Hours Battery CR2032 (Not Included) Brightness 0-11 Magnification 1x Eye Relief Unlimited Elevation Adjustment 30 MOA Mount Picatinny or Weaver Weight 0.3 LBS Parallax 30 Yards Adjustment Value 1 inch at 100 YDS 1 MOA Per Click Water Resistant IP55 Splashproof Dimensions 3.0 X 1.3 X 1.7" Package Contents: Bresser OMNI-4 Red LED Inverted Waterproof Precision Reflex Sight Bresser 23-20400: OMNI-4 Red LED Inverted Waterproof Precision Reflex Sight30 MOABlack