2-function headlight operates either manually with a built-in on/off switch or through the wave motion sensor. Exciting wave motion sensor allows you to turn the light on and off with just the wave of the hand, without touching the light. This is a great feature when working with gloved, wet, oily, or greasy hands. 45 degree pivoting head allows you to position the light exactly where you need it. An adjustable, washable head strap allows for a perfect fit. Features include: 122 lumens of power on high and 41 on low, run times of 4 hours on high and 10 hours on low, and a maximum beam distance of 23 meters. Rugged and durable, surviving a 1 meter drop test. 3 AAA batteries included.