H4 12 Volt LED Headlight. Works either positive or negative ground. p43t Base for classic and vintage vehicles. This bulb operates from 8V to 30 volts AC. Has the 6 Volt running light feature. Great for old vehicles that are positive ground or negative ground. The bulb can be adjusted 360 degree's using allen wrench. The Lumen output for high beam is up to 1,800 Lumens. The Lumen output for low beam is up to 1200 Lumens. Operating life up to 30,000 hours. Up to 17W led output power which is comparable to 150 watt incandescent bulb The low beam is covered with anti dazzle protection for the on coming driver. The are 2 LEDs on each side which 2 LEDs are used for low beam and two LEDs are used for high beam. Package comes in a pair. Available in white 6000K. CE and Rohs listed.