This is another item I purchased for my class. It is a Petzel Tactikka XP Headlamp. Short story? great headlamp, has four settings. A high, medium, low and a flashing option. The lamp takes two AAA batteries. The kit comes with a red lens that is pretty cool, a flick of your thumb or finger slides the lens over the white light. No fumbling, no fuss no muss. Adjusting the head strap is super easy and as far as head straps go pretty comfortable.