Designed with three brightness modes to meet the widest range of use, the Princeton Tec Fuel 4 LED is lightweight 3 oz. and compact. . Four ultrabright LEDs, ideal for close to mid range tasks. 4 mode switch includes 3 brightness mode and a strobe mode. Weighs only 3 oz. 78 g with batteries with 43 lumens of brightness and 146 hours of burn time. Large, easy to find push button switch. Asymmetrical single arm bracket makes directing the light effortless and reliable. Easy access, virtually bulletproof battery door protects the 3AAAs and the electronics. Water resistance to splashing and quick dunkings. 3 AAA Energizer batteries included.