Atom LED magnifier headlamp great for camping, caving, fishing, and even sailing. 1 luminous clear LED twist with a on\/off switch, and a pivot hinge to adjust light beam where needed. Detachable clip light for top mount design does not obstruct line of vision. Durable ABD housing, weather resistant, adjustable stretch headband. Lightweight, 1.6 oz powered by 2 CR-2032 lithium batteries included.