THE BATTERYGUARD™ SYSTEM ON THE COLEMAN 125M HEADLAMP STOPS BATTERY DRAIN, SO BATTERIES LAST MUCH LONGER IN YOUR DEVICE (UP TO THEIR INHERENT SHELF LIFE). THE HEADLAMP FEATURES A FULL-ADJUSTABLE HEAD STRAP AND SIMPLE OPERATION. HEADLAMP HAS 3 MODES AND A RUN TIME OF 200 HOURS ON LOW OR 2.5 HOURS ON HIGH. COMPLIES WITH PROP 65. 3" W X 2" H X 1.75" D