Offering true 2 eyes open shooting a transversely mounted lithium 123 battery and 7 mm raised base offering iron sight access the new EXPS2 features easy to adjust side buttons and a single quick release throw lever for easy attachment and removal. - Reticle is a 65MOA circle with 1 MOA aiming dot - 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 600 hours - Side buttons with a single quick detach throw lever - Operation: - Optics: Transmission holography - parallax free - Magnification: 1x - Eye Relief: Unlimited - Length/Width/Height: 3.5x2.4x2.8 (91.4X 60.9x71mm) - Weight: 11.2 oz (317grams) - Temperature: -40 to 150 F - 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 Weaver or (MIL-STD-1913) rail. Adjustable for width variation - Return to Zero: Repeatable to within 2 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 - Reticle: 65MOA ring with single 1MOA dot - Electrical: - Brightness Adjustment Range: 146000:1 brightest to lowest - Power Source: (1) 123 lithium battery - Battery Life: 600 continuous hours at nominal setting 12 - 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