Eotech's highly functional and easy-to-use 518 holographic weapon sight features the quick-release base; left side buttons reduces rail space when partnering with a magnifier; lbc compatible; fits both 1" weaver and mil-std-1913 rail; 20 brightness settings and a scrolling feature.Features auto shut down at 8 hours.Battery: AAMagnification: 1xObjective: 1.20"/30 mm x 0.85"/23 mmField Of View: 30 yds at 100 ydsEye Relief: UnlimitedDot Size: 1 MOA/68 MOALength: (2) AAWeight: 13.80 oz/391.2 gFinish: Matte BlackReticle: 1 MOA Red Dot/ 68 MOA Red RingAdjustment Size: 0.50 MOAProofs: Water/Weather ResistantOptic Coating: Anti-ReflectionWindage Elevation: Adjustable