Nasa Supernova LED All round White

Supernova uses high efficiency LEDs ensuring low power consumption. A tough polycarbonate shell protects Supernova from the elements while a Goretex membrane vent ensures equalization of pressure on the seals.
200ma @ 12volts, 2 nautical miles visibility, waterproof to IP-65 and 67, 91mm dia, 113mm high.