The Eco Flare can be set on constant, high-output, incandescent mode for use as an area/personal locator light, or on flashing, red Ultrabright LED mode for low-visibility, dark nights. The Ultrabright LED will burn in excess of 500+ hours on 2 AAA alkaline batteries. The Eco Flare can also be attached to your dogs collar for easy identification in low light conditions. Weight 1.5 oz. (42 g). Made in the U.S.A.