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 Dot Night Vision Compatible Gen I-III Dimensions: 5.6?L x 2.0?W x 2.5?H (143 x 51 x 64mm) Weight: 11.1 oz / 312 g Water Resistant: Submersible to 33 ft./10 m Mount: 1? Weaver or MIL-STD-1913 Rail Brightness: 30 daylight settings (10 for Night Vision) Power Source: AA (Alkaline or Lithium Battery Life: Approximately 24 hours at nominal setting 12 at room temperature