Model 552 A68Model 552 is the model of choice for elite military forces and government agencies like the DEA, ATF and FBI. It's night vision-compatible and has been battle-tested by Special Forces units around the world. Are you a sportsman interested in hunting with night vision? Give the 552 another look. The 552 is EOTech's most affordable night vision-compatible sight and it partners with most night vision-devices. The 552 is designed to increase your speed to target even after the sun goes down.Description: Length: 5.6 in (143mm) Width: 2.0 in (51mm) Height: 2.5 in (64mm) Weight: 11.1 oz (312g) Mount: 1" Weaver or Mil-Std 1913 rail Power Source: AA (Alkaline or Lithium) Brightness: 30 settings (10 for NV) Water Resistance: 33 ft (10m) Battery life: Approx 1,000 continous hours (Lithium) or 600 hours (Alkaline) at nominal setting 12 at room temperature Color/Finish: Black Night vision compatible: Gen I-III Reticle option(s): • -0: 68 MOA ring with 1 MOA dot (552.A68) • XR308 (4 dots for .308/7.62x51) (552.XR308)