524 lumens 366m beam 69 hours max run time eco mode 5 available light modes momentary full power low power eco strobe 4 preset activity modes default general outdoor law enforcement tactical battery run time eco 69h low 20h full 6h 30min weight with batteries 566g length 231 77mm diameter 38 1mm battery type 2x d cell lr20 not supplied 14 turn adjustable spot to flood focus individually serial numbered rugged machined aluminium construction