Very bright H1 led headlight bulb. Uses P14.5 base. Works both positive ground or negative ground. Up to 1400 Lumen output. Uses up to 16 Watts. Single filament lamp. Uses aluminum heat sink to keep led's cool so they last longer. Available in White 6000K or Warm White 3000K. Comparable up to 144 Watt incandescent bulb. This headlight bulb can work in 6 volt vehicles, trucks, motorcycles and scooters. Works also in 8 volt Fords. Sold as a pair. This bulb is not dimmable since it is wide voltage from 5 to 9 volts. CE and Rohs.