THE BATTERYGUARD™ SYSTEM ON THE COLEMAN 3AA BATTERYGUARD 250M LED FLASHLIGHT HAS A SYSTEM THAT STOPS BATTERY DRAIN, SO BATTERIES LAST MUCH LONGER IN YOUR DEVICE (UP TO THEIR INHERENT SHELF LIFE). FLASHLIGHT HAS HIGH AND LOW MODES, A RUN TIME OF 2 HOURS ON HIGH OR 200 HOURS ON LOW, BEAM DISTANCE OF 325M ON HIGH AND 70M ON LOW. FLASHLIGHT HAS 500 LUMENS AND IS IMPACT RESISTANT. POWERED BY 3AA BATTERIES (INCLUDED). COMPLIES WITH PROP 65. 7.5" L X 2.75" DIAMETER