Federal Signal brightest and most compact strobe light, the Fireball® emits a powerful "lightning bolt" flash of light. Approximately 5 in tall and 4 in in diameter and rated at 300 effective candela, the Fireball® is an economical solution to a wide variety of stationary and vehicular warning requirements. Black epoxy paint is electrostatically applied to the base for superior corrosion resistance. The Fireball® dome and base design provides a watertight dust tight .