Four AA batteries. The Ledlenser P14 doesn't need more to turn night into day. With light output of up to 8 lm1, its beam can penetrate up to 35 m1 into the night. Additionally the P14, like all lights in the P-Series, has a standardized function range - ideal for those who value good design combined with uncomplicated functionality.LED ? LED Configuration - 1 x Xtreme LED ? Luminosity - MAX 8 lm - MIN 4 lm ? Lighting Range - MAX 35 m - MIN 11 m ? Battery Duration - MAX 5 h - MIN 1 h Battery and Casing ? Battery - 4 x Mignon (AA) 1.5V ? Battery Capacity - Wh ? Water Resistance - IPX4 ? dust resistance - IP5X ? Rechargeable ? No Height and Weight ? Length (defocused) - 198 mm ? Head Diameter - 47 mm ? Weight - 35 g