EOTech # 517.A65 MOA ring & 1 MOA dot

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Specifications 
 Operation
OpticsTransmission holography - parallax free
Magnification1x
Eye ReliefUnlimited
Length5.6"x2.1"x2.8" (142x53x71 mm)
Weight 11.9 oz (337 grams)
Temperature -40 to 150 F (using AA lithiums); -20 to 140 F (AA Alkaline)
Waterproof Submersible to 10 ft depth
Sealing Fogproof internal optics
Adjustment(Per Click) 0.5 MOA (1/2" at 100 yds)
Adjustment Range +/- 40 MOA travel
Mount 1" Picatinny (MIL-STD-1913) rail
Return to Zero Repeatable to 1 MOA after re-mounting
 Heads-Up-Display Window
Optical SurfacesAnti-glare coating
Window Dimensions 1.20" x 0.85" (30 x 23mm)
Front Window Material 1/8" solid glass
Rear Window MaterialShatter resistant laminate (3/16" thick)
Field of View (100 Yds) 30 yds (28m) at a 4" eye relief
 Elecrical
Brightness of Adjustment Range146,000:1 brightest to lowest
Function Button Location Left side near the rear of sight
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 Settings20 settings with scrolling feature
Auto Battery Check IndicatorFlashing reticle upon start-up
Auto Shut-downAt 8 hrs- programmable to 4 hrs