EOTech 553 User Manual
Page 15
Electrical
Brightness Adjustment Range: 110,000: 1 brightest to lowest
Night Vision Brightness Range: 1000: 1 with NV switch engaged
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: 30 settings with scrolling feature (10 settings for NV use)
Auto Battery Check Indicator: Flashing reticle upon start-up
Auto Shut-down: At 8 hrs- programmable to 4 hrs
M551
Operation
Optics: Transmission holography – 100% parallax free
Magnification: 1x
Eye Relief: Unlimited
Length/Width/Height: 4”x1.8”x2.25” (102x49x60 mm)
Weight: 8.8 oz (250 grams)
Temperature: -20 to 140 F
Waterproof: Submersible to 33 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: Picatinny (MIL-STD-1913) rail
Return to Zero: Repeatable to 2 MOA after re-mounting
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