The sight light kit is the perfect fix for shooting in low lighting conditions. Designed specifically for Spot-Hogg sights with the wrap kit, this purple LED light effectively illuminates your fibers even in the lowest lighting conditions. Designed to illuminate your pins without lighting up the rest of the sight so that you can still focus on the target in low light conditions. This light uses 3 LR41-1.5V or Energizer 392 batteries which are included.