The EOTech Model 552 has been battle tested and is the model of choice for military and government agencies such as the DEA, ATF and FBI.Reticle: -0: 68 MOA Ring with 1 MOA DotNight Vision Compatible Gen I-IIIDimensions: 5.6"L x 2.0"W x 2.5"H (143 x 51 x 64mm)Weight: 11.1 oz / 312 gWater Resistant: Submersible to 33 ft./10 mMount: 1" Weaver or MIL-STD-1913 RailBrightness: 30 daylight settings (10 for Night Vision)Power Source: AA (Alkaline or LithiumBattery Life: Approximately 24 hours at nominal setting 12 at room temperature