Astro Super Lite * Astro Super Lite is made from aircraft grade aluminum, with 6 high-power LEDs inside. * it"s water resistant and hangs anywhere with your choice of the included carabiner clip and lanyard. * 6 high-power LEDs last for more than 100,000 hours. * Includes carabiner clip and lanyard-attach to backpacks, keychains, or wear around your neck. Includes 2 button cell batteries.