The led compact flashlight qr w/strobe will disorientate your target and extend battery life.Quick release mount that will fit most weaver/picatinny type rails found on most mid size and compact semi-automatic pistols (not sub-compact and pocket pistols).Push button rubber switch on the left side of flashlight and a push button rubber strobe button on the right side of the flashlight.Uses 1 cr2 lithium type battery (included and smaller/shorter battery than the cr123a).Type: Flashlight w/StrobeOutput: 150 LumensBulb Type: 3 Watt LEDOal: 2.4"Weight: 2.6 ozBattery: CR2 Lithium (1)Color: BlackSwitch Type: Push Button