EOTECH HWS EXPS3 1x Red Dot - Circle 1-Dot - Faster Speed to Target with room to work with the iron sights and night vision. The HWS EXPS3 is an excellent choice for professionals. The EXPS3 offers true two eyes open shooting for fast target acquisition, night vision compatible settings, and a 7mm raised quick detach base for lower 1/3 iron sight co-witness. Included: HWS EXPS3, Quick-Start Guide, Warranty Card, CR123 Battery, Protective Case; Water Resistant: 33ft; Mount: 1in Weaver or MIL-STD-1913 rail; Windage & Elevation Adjustment: 0.5 MOA per click; Brightness: 20 daylight settings, 10 additional settings for Gen I through III+ night vision devices; Battery Life: 1,000 continuous hours at nominal setting 12 at room temperature; Operating Temperature: -40F to 140F;