The tf-150 tactical is the perfect backpack/back-up light.Featuring a 5 watt led bulb and a 3-hour burn time along with the durable aluminum body, this flashlight will get you where you need to go when you need to get there.Material: AluminumType: FlashlightOutput: 150 LumensBulb Type: LEDOal: 3.75"Weight: 1.58 ozBattery: AAProofs: Weather ResistantColor: Black AnodizedRechargeable: NoFilter Color: WhiteSwitch Type: Push Button