LaserMax Micro Reflex Red Dot Sight 4 MOA Red Dot Matte Black. The housing is constructed of aircraft grade 7071 aluminum. The sight is ideal for conceal carry style pistols. The LM-MRDS comes equipped with an industry first external light sensor which automatically adjust the brightness of the red dot based on ambient lighting conditions. A picatinny mount mounting hardware and battery are included. Specifications for LaserMax Reflex Micro Red Dot Sight: Manufacturer: LaserMax Color: Matte Black Fabric/Material: Aluminum Magnification: 1 x Objective Window Size: 21x16.5 mm Reticle: 4 MOA Red Dot Illumination Type: LED Illumination Color: Red Eye Relief: Unlimited Adjustment Click Value: 1 MOA Emitter Type: Open Field of View Linear: 0 m to Infinity Battery Type: Lithium Metal CR2032 Battery Life: 10000 hours Weather Resistance: Yes Shockproof: Yes Red Dot Sights-Footprint: RMSc Lens Type: Glass Adjustability: Adjustable Features of LaserMax Reflex Micro Red Dot Sight: External Light Sensor for Auto Brightness Management 10000 hour run time Brightness settings: 8 Day / 2 Night Shake to awake Reticle: 4 MOA Red Dot Winadage/Elevation Adjustment: 1 click = 1 MOA Operation Modes: Auto brightness or manual adjust RMSC mounting footprint Power Source: CR2032 included Package Contents: LaserMax Reflex Micro Red Dot Sight