Lamp life rated at 100,000 hours Integral flange option features built-in lens Meets recommended SAE J1318 and j845 photometric specifications Resistance to shock and vibration External power pack not required Dual or quad flashing patterns Mounts horizontally or vertically Non-metalized version offers wider viewing angle Metalized reflector version offers more intense focused light Fit'N Forget adapter plug provides corrosion and moisture resistance