Light source    :USA imported CREE Q5 LED
Brightness       :260lumens
Power             :3w
Material          :6061-T6 aviation aluminum
Size                :150mm,33mm,22mm
Power source :1*18650 rechargeable Li-ion battery or 2*16340 battery or 2*CR123 battery

Runtime          :2-5 hours
Distance          :100-200meters
Waterproof      :Ip67
Modes              :3modes (High>Low>Strobe)