The HWS XPS2(TM) is the non night-vision version of EOTechA(R)'s shortest and lightest HWS sight so far. The CR123 lithium battery configuration of the XPS2 provides additional rail space, leaving more room for rear iron sights or magnifiers. Also offering water-resistant capability up to 10 feet, the XPS2 is a great compact and lightweight option for your platform. SPECS Non-Night Vision Compatible L X W X H: 3.8" x 2.1" x 2.5" (96.5 x 53.3 x 63.5 mm) Weight: 9.0 oz (255 g) Water Resistant: 10ft. (3 m) depth Mount: 1" Weaver or MIL-STD-1913 rail Windage & Elevation Adjustment: 0.5 MOA per click Brightness: Mfg: Eotech