Caldwell Flash Bang AR500 Steel Target Hit Indicator 10 Green LED Lights 5in Targets Range 1000 yards Black. Flashing green LED lights are triggered by an impact on the target telling shooters of their hits at extremely long ranges where confirmed hits can be difficult. The self-contained unit features 10 ultra-bright green LED lights that are visible for thousands of yards even in bright daylight conditions.Powered by 3 AA batteries (included) the Flash Bang has a battery life of over 30000 impacts. The Flash Bang is compatible with targets over 5in and attaches easily with heavy-duty hook and loop material. Features of Caldwell Flash Bang AR500 Steel Target Hit Indicator 10 Flashing Led Lights Notify Shooter Of An Impact At Extended Ranges; Low Impact Energy Detection Easily Detects .223 Hits At 1000 Yards; Versatile Compact Design Works On Most Steel Targets Over 5in; Package Contents: Caldwell Flash Bang AR500 Steel Target Hit Indicator 3 AA Batteries Caldwell 1198772: Flash Bang AR500 Steel Target Hit Indicator 10 Green LED Lights 5in Targets Range 1000 yards Black