• 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
• Average battery life at brightness level 12 is roughly 600 hours
• The XPS2 is not Night Vision compatible, for Night Vision compatibility see the XPS3 sights

Operation

• Optics: Transmission holography -  parallax free
• Magnification: 1x
• Eye Relief: Unlimited
• Length/Width/Height: 3.5"x 2"x 2.4" (88.9x50.86x60.96)
• Weight: 8oz (227 grams)
• Temperature: -40 to 150 F
• 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" Weaver or Picatinny (MIL-STD-1913) rail
• Return to Zero: Repeatable to 2 MOA after re-mounting
• Night Vision Comatibility: none

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
• 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