Description The Fenix PD25 is equipped with a Cree XP-L LED and an intelligent control circuit, delivering an impressive output of 550 lumens from a rechargeable 16340 Li-ion battery. It is also compatible with CR123A batteries. Additionally, a tactical rear switch for momentary function and a metal side switch on the head are all you need to control five outputs, including strobe mode. Features Uses Cree XP-L (V5) LED with a lifespan of 50,000 hours Powered by a rechargeable 16340 Li-ion battery or 3V CR123A Lithium battery Dimensions: 93 mm (3.7 inches) in length × 21.5 mm (0.8 inches) in diameter Weight: 47 grams (1.65 oz) without battery Digitally regulated output maintains constant brightness Low voltage warning function to remind you to replace the battery Reverse polarity protection to prevent improper battery installation Overheat protection to prevent high surface temperatures Anti-roll and anti-slip body design Tactical tail cap switch with momentary-on function Side switch on the head for output selection Made from durable aircraft-grade aluminum Premium type III hard-anodized anti-abrasive finish Ultra-clear glass lens with anti-reflective coating