The Cobber XL-Sensor is a motion sensor headlamp. It comes with four useful settings: a high powered 110 lumen beam, an energy saver 65 lumen beam, a flashing white safety light, and a motion sensor mode. In motion sensor mode the headlamp can be turned on or off with a wave of the hand within 8 inches of the front of the headlamp. Additional features include: a water resistant exterior, an adjustable head strap for customizable comfort, and a 45 degree adjustable head. Like all our lights, we stand behind this product with our limited lifetime warranty.