EOTech Holographic Sight 512

The Model 512 is the most popular model HWS. This tactical optic is perfect for agencies that want the best in CQB speed and versatility, without the need for night vision compatibility.
AA Battery model (supports Lithium and Alkaline)
Reticle: 65 MOA circle with 1 MOA aiming dot
Includes rugged aluminum hood assembly and knobbed, tool-less mounting bolt
Interfaces to 1" Picatinny (MIL-STD-1913) or Weaver rail 
Operation
Optics: Transmission holography -  parallax free
Magnification: 1x
Eye Relief: Unlimited
Length/Width/Height: 5.4"x1.8"x2.25" (137x49x60 mm)
Weight: 10.9 oz (309 grams)
Temperature: -40 to 150 F (using AA lithiums); -20 to 140 F (all other battery choices)
Waterproof: Submersible to 10 ft depth
Sealing: Fogproof internal optics
Color/Finish: Non reflective black with hard coat finish
Adjustment (per click): 0.5 MOA (1/2" at 100 yds)
Adjustment Range: +/- 40 MOA travel
Mount: 1" Picatinny (MIL-STD-1913) or Weaver rail
Return to Zero: Repeatable to 1 MOA after re-mounting
Heads-Up-Display Window
Optical Surfaces: Anti-glare coating
Window Dimensions: 1.20" x 0.85" (30 x 23mm)
Front Window Material: 1/8" solid glass
Rear Window Material: Shatter resistant laminate (3/16" thick)
Field of View (100 yds): 30 yds (28m) at a 4" eye relief
Standard Reticle: 65MOA circle with a single 1 MOA aiming dot
Electrical
Brightness Adjustment Range: 110,000:1 brightest to lowest
No Night Vision Compatibility
Power Source: 2x 1.5V AA batteries (supports lithium, alkaline, or rechargeable)
Battery Life: 1,000 continuous hours (lithium) at nominal setting 12; 600 continuous with AA alkaline
Brightness Settings: 20 settings with scrolling feature
Auto Battery Check Indicator: Flashing reticle upon start-up
Auto Shut-down: At 8 hrs- programmable to 4 hrs