Features of Fenix LD10 R4: • Cree XP-G LED (R4) with lifespan of 50,000 hours • 2 modes with 6 types of output: General Mode: 9 lumens (34hrs) - > 50 lumens (6hrs) -> 105 lumens (2.2hrs) - > SOS Turbo Mode: 132 lumens (1.5hrs) ->Strobe • Digitally regulated output - maintains constant brightness • Uses one 1.5V AA (Alkaline, Ni-MH, Lithium) battery (not included) • 100mm (Length) x 21.5mm (Diameter) • Made of durable T6 aircraft-grade aluminum • Premium Type III hard-anodized anti-abrasive finish • 50-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, two spare o-rings and a rubber switch boot