Fenix PD25 LED 550 Lumen Flashlight produces more light than most full-sized flashlights. The PD25 measures in at just under four inches, making it very lightweight, compact, and able to fit in your pocket, bag, or just about anywhere. This flashlight produces max 550-lumen and 427ft beam distance from a 16340 rechargeable Li-ion battery. The tail cap switch provides momentary-on function while the side switch on the head is for output selection.