The task in designing the LED optical units was to find the optimal balance of brightness, heat dispersion, and reliability. FourSix’s come with a choice of ThermoCool LEDs in 17W or 30W. The ThermoCool LEDs have accumulated countless hours of testing and design. What you get is a rigorously tested LED optical unit designed to exceed 10,000 hours of runtime.  With light output over 2x stock headlights, you’ll get a boatload of crisp white light while saving up to  80% amperage draw compared to OEM sealed beams.