The Dorcy 650 Lumen LED battery indicator flashlight features a high powered NICHA-319 LED solid state diode for optimal light output. High/Med/Low modes. The flashlight is constructed of anodized aluminum and contains a recessed tail cap switch with a built-in LED battery indicator. The battery indicator light is green when more than 20% of battery power remains and turns red when less than 20% of battery power remains. The Flex battery system feature allows the light to run on 1,2,or 3 batteries. The 650 Lumen LED battery indicator flashlight comes complete with 3 AAA cell batteries.