The mepro tru-vision sr mil-spec red dot sight featuring dual selectable reticles 2/65 moa speed ring or 2 moa dot.A micro-chassis protects the electronics from damage in the harshest of conditions.It is shockproof/waterproof, 4 to 8 hour sleep mode as well as full on shake awake for le and home defense use.The mepro tru-vision sr features an automatic brightness control system ensuring clear visibility of the red dot in any lighting condition.User can manually control the 16 brightness settings (12 daytime, 4 nighttime) or use the 8 automatic brightness settings.Battery Size: CR123Weight: 10 ozReticle: 2/65 MOA Speed Ring/2 MOA Red DotAdjustment Size: .50 MOAProofs: Shockproof/Waterproof