Add an extra touch of safety to your car with these high-quality LED door warning lights. The waterproof strip is 47 inches long and contains 144 premium quality LED lamp beads (72 white and 72 red). The white part is always on, providing additional illumination, while the red part flashes and flows to warn other drivers. Designed as a direct replacement for your existing door welcome light, these lights have a lifespan of up to 50,000 hours and are shockproof and dustproof. They're suitable for all types of cars and come with a 90-day manufacturer warranty. Professional installation is highly recommended for these strobe flashing anti rear-end collision safety lamps.