H4 P43t base 6 Volt LED headlight for vintage vehicles and classic motorcycles. This led is designed for 6 volt motorcycle headlights. Works either AC or DC voltage. Very bright. Dual high and low beam. Up to 750 Lumen output. Comparable to a 50 - 75 Watt incandescent bulb. Made with the latest smd leds 5730. The profile of the led fits inside of a normal light bulb so you know it will fit your application. Operates either 6v positive ground or 6v negative ground. Up to 650 Lumens for high beam and up to 510 Lumens for low beam. This headlight bulb is up to 50 candle power CP for high beam. Up to 40 candle power CP for low beam. Long life up to 30,000 hours. This bulb uses approximately .490 amp @ 6.9 volts for hi beam. The bulb comes in White 6000K and Warm white 3000K. The Warm White simulates the original color of a incandescent light bulb. However the Warm White is about 5% less output than the 6000K bulb. The length bulb M.O.L. is 2.615" and the diameter of the just the bulb not the base is .729". The diameter of the H4 base is 1.692" and has 3 claws around the ring. This bulb is dim-able with a variable voltage supply. This bulb has a viewing angle of 360 degrees. Positive ground is considered same as AC power for old motorcycles. The bulb operates up to 7.8 Volts. CE and Rohs.