Featuring 3 colors (6500K/4300K/3000K) Mini LED bulb 3 colors 6500K/4300K/3000K
3 colors + flashing
The S4 series H4 LED headlight bulb allows you to change the light color to suit any emergency conditions. The S4 LED automotive bulb offers a high number of cool white of 6,500 K to improve your visibility at night. The hot one at 3,000 K and the warm white at 4,300 K provide the best penetrating force, providing clearer vision on rainy, foggy, snowy and smoggy days. The flashing model can be used in emergency situations.
Effective dissipation management
When the LED headlight bulb is working, heat comes from the chips. The H4 car bulb dissipates heat efficiently by eliminating high temperature from the chip with 1.0mm double-sided copper substrate, 6063 aluminum and 7500RPM high-speed mute fan, achieving efficient heat dissipation for a longer lifespan of over 30,000 hours.
Perfect beam pattern 
Beam pattern is as important as brightness. S4 series H4 LED headlight bulbs for cars allow you to rotate 360° for better beam pattern. A precise beam allows you to see and be seen more clearly and comfortably without dazzling oncoming vehicles. There is no doubt that the S4 is the best LED projector headlight bulb replacement.
Mini size design
Many LED headlight bulbs use a large fan cooling system, but it is neither small nor easy to install. The S4 LED car bulb is designed to be as compact as possible. Mini size H4 LED headlight bulbs are almost 1:1 the same size as halogen bulbs and definitely fit 99% vehicles without any modification.
Extreme tests
The H4 LED car bulb has passed extreme resistance tests for water, frost, mud, sandstorm and high/low temperature. Make bulbs more stable and durable.
