The compact, pen-size PFA1 fits in your breast pocket to be ready for use at any time. It’s ideal for illuminating your workspace and similar areas at close range. A memory unit ensures that the PFA1 always turns on at the level you most recently used. The on/off switch on the back also lets you easily change the brightness (2/25/100 lumens). A practical stainless steel clip is attached. The rugged aluminum housing is hard-anodized and watertight as per IPX8. The light is powered by two standard AAA-size batteries (1.5 V micro or 1.2 V rechargeable). Comes with a battery and replacement seal.