Speed Demon LED replacement bulbs fit vehicle daytime running lights (DRL). This H4 LED bulb replaces traditional H4 halogen and xenon bulbs. It has 33 LEDs. The radially mounted LEDs emit a 360° viewing angle that illuminates the DRL reflective housing to set a vehicle apart from its surroundings. Tower-style design with an H4 base for easy plug-and-play installation. The energy-efficient bulb operates within a wide 9-14.8V DC range and is designed to last 30,000 hours on your car, truck, SUV, or van—25 times longer than incandescent bulbs. Bright white color.