The FLASH series are a compact red dot sights and offer unlimited eye relief with a daylight bright illuminated 3 MOA dot. Specifications for Nikko Stirling NRD30H Flash 1x Reflex Red Dot Sight: Manufacturer: Nikko Stirling Color: Black Finish: Matte Magnification: 1 x Reticle: 4 MOA Illumination Type: LED Illumination Color: Red Eye Relief: Unlimited Emitter Type: Enclosed Lens Material: Glass Optical Coating: Multi-Coated Weather Resistance: Yes Water Resistance Level: Waterproof Shockproof: Yes Fogproof: Yes Length: 91 mm Weight: 178 g Quantity: 1 Red Dot Sights-Footprint: Not Applicable Features of Nikko Stirling NRD30H Flash 1x Reflex Red Dot Sight Centerfire, shot-, hand- and airgun Aircraft grade aluminum tube Integrated Picatinny mount Extra High Rise Picatinny mount included Extrem bright red illumination 11 settings 3 MOA dot Fully multicoated lenses Water-/Dust/Shock proofed Package Contents: Nikko Stirling NRD30H Flash 1x Reflex Red Dot Sight Lens Cover Lens Cloth Manual