Features of Fenix LD20 R4: • Cree XP-G LED (R4) with lifespan of 50,000 hours • Two modes with 6 types of output: General Mode: 9 lumens (71hrs) - > 50 lumens (13hrs) -> 105 lumens (5hrs) - > SOS Turbo Mode: 205 lumens (2hrs) ->Strobe • Digitally regulated output - maintains constant brightness • Uses two 1.5V AA (Alkaline, Ni-MH, Lithium) batteries (not included), inexpensive and widely available • 150mm (Length) x 21.5mm (Diameter) • Made of durable T6 aircraft-grade aluminum • Premium Type III hard-anodized anti-abrasive finish • 60-gram weight (excluding the battery) • Waterproof to IPX-8 Standard • Toughened ultra-clear glass lens with anti-reflective coating • Push-button tail cap switch • Capable of standing up securely on a flat surface to serve as a candle • Included accessories: holster, lanyard, body clip, two spare o-rings and a rubber switch boot