Pelican Big Ed 3700 Photoluminescent Flashlight Same as the Pelican 3700 Flashlight but outfitted with a lens ring that emits a bright glow in the dark. The new generation photoluminescent material in the plastic absorbs the energy from any light source - fluorescent lights, the sun, or even the flashlight's own beam. No more fumbling in the dark for your flashlight. The Pelican Big Ed 3700PL is powered by 4 C alkaline cells.