Ozark Trail Auto-Dimming Headlamp, 200 Lumens Built-in optical sensor extends bettery life by efficiently using power. Patented auto-dimming technology senses user's environment and instantly adjusts light brightness Beam instantly becomes brighter when user looks at objects far away, and switches to low output when user looks at objects in very close range Ultra-bright CREE LEDs 5 modes: spot high, spot low, flood high, flood low and red mode Requires 3 AAA batteries (included)