Eotech has done it again by making the best even better. Offering true 2 eyes open shooting, a transversly mounted lithium 123 battery, and 7 mm raised base offering iron sight access, the new Extreme-XPS (EXPS) features easy to adjust side buttons and an adjustable, locking, quick detach lever for easy attachment and removal. * Single transverse 123 battery to reduce sight length * Shortened base only requires at most 2 3/4 inch of rail space * Battery cap and latch are eliminated and replaced with a simple O-ring, tethered cap; better sealing is achieved * Battery compartment is now separated from the base to allow it to hover over the delta ring of the rifle * Average battery life at brightness level 12 is roughly 500-600 hours * Side buttons, NV compatible with an adjustable, locking, quick detach lever for easy attachment and removal Specifications: Operation * Optics: Transmission holography - parallax free * Magnification: 1x * Eye Relief: Unlimited * Length/Width/Height: 3.5""x2.4""x2.8"" (91.4X 60.9x71mm) * Weight: 11.2 oz (317grams) * Temperature: -40 to 150 F * Waterproof: Submersible to 33 ft depth * Sealing: Fogproof internal optics * Color/Finish: Non reflective black with hard coat finish * Adjustment (per ): 0.5 MOA (1/2"" at 100 yds) * Adjustment Range: +/- 40 MOA travel * Mount: 1"" Weaver or (MIL-STD-1913) rail Adjustable for width variation * Return to Zero: Repeatable to within 2 MOA after re-mounting * Night Vision Compatibility: 10 brightness setting (generation I-III+) 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 Electrical * Brightness Adjustment Range: 146,000:1 brightest to lowest * Night Vision Brightness Range: 1280:1 with NV switch engaged * Power Source: (1) 123 lithium battery * Battery Life: 600 continuous hours at nominal setting 12 * 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 * Holographic Red-Dot Sight * Reticle is a 65MOA Circle with two 1MOA Aiming Dots * Side buttons and Night Vision compatible * Quick Detach Lever for easy attachment and removal * Powered by 1 CR123A Battery