M-Flare 40454 Pro Super-Bright 300 Lumens Luxeon LED Headlamp Extreme brightness powered by three Luxeon Rebel 100 LEDs Adjustable headband with 3M reflective strap at the back Microprocessor-controlled Luxeon LED, light beam reaches up to 105 meters Runs on 3x1.5V D size batteries (not included), up to 8 hours at 100% brightness Easy dial switch between four different modes - high, med, low and SOS-flashing