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.