Let there be (extremely bright) light! This headlamp packs a whopping 300 lumens of bright light, powered a high-performance Cree LED module. An adjustable focus knob provides different beam patterns with a simple twist - ranging from a pencil thin beam, to a broad, bright wash. Four different lighting modes (low, medium, high and flash) provide illumination options for whatever use you can think of, fueled by three AAA batteries (included)! An adjustable head strap completes this package and provides a secure, cozy fit.