Rebaydo 2pcs P15D-25-3 LED Headlight 12 Volt 30 SMD operates on 12 Volt positive ground or negative ground and is dimmable with a variable voltage source. It features dual filament low and high beam operation, produces up to 650 lumens, has a service life of up to 30,000 hours, and uses approximately 3.75 Watts at 13.8 Volts while providing light output comparable to a 27-37 Watt halogen bulb. The LED lamp is smaller than the outline of the bulb it replaces to help simplify installation, and the LEDs are optically aligned to the reflector for maximum light output. Available in ultra white 6000K and warm white 3000K with a Euro-style white light. The overall length is 1.962 inches with a diameter of 0.741 inches. Compatible with BMW M5 headlight style.