Lightweight, 4 LED, 70 lumen, task light with 4 lighting modes that can be worn with or wihtout 3M hard hats. Weighing only about 78 grams, but able to run up to 150hrs on low setting and 74hrs on its high setting, this water resistant (IPX-4 rated) hard hat mounted head lamp is ideal for a wide range of industrial lighting applications. Comes with 3 AAA batteries and three attachment options.