Brookstone Astro Super Lite Astro Super Lite Astro Super Lite is made from aircraft grade aluminum, with 6 high-power LEDs inside. its 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 lanyardattach to backpacks, keychains, or wear around your neck. Includes 2 button cell batteries. Made of aircraft-grade aluminum 6 high-power LEDs last for more than 100,000 hours Water-resistant Includes carabiner clip and lanyardattach to backpacks, keychains or wear around your neck 2 button cell batteries included