p45t base led headlight. Up to 650 Lumen output or 60 CP. Dual filament high and low beam. Made with 5730 smd leds for long life. Rohs and CE listed. Designed for easy installation, just remove old headlight and insert new headlight. Works both 6 volt positive ground and 6 volt negative ground. Great for old classic and vintage automobiles, motorcycles and tractors. Available in white 6000K and warm white 3000K. Long life up to 30,000 hours. Comparable to a 45 to 55 watt incandescent bulb. The maximum overall length is 1.944 inches. The maximum diameter is .760 inches. Fits standard H4 bulb shape.