This HID xenon replacement bulb is especially deigned to replace your 9006/HB4 dim headlight, low beam, high beam and fog light bulb. Adopting advanced HID (High Intensity Discharge) technology, the HID xenon gas filled bulb can provide 3500lm brightness which is about 3 times brighter than halogen bulb and it is waterproof, dustproof and shockproof and will not interfere with wireless devices. Lighting up through stimulating gas with electrons rather than tungsten filament, the lifespan of this HID xenon bulb can reach up to 3000hrs which is about 10 times of halogen bulb and 35% lower power consumption than halogen bulb. Additionally, it is simple to install, plug and play. - Super Bright: Adopting advanced HID (High Intensity Discharge) technology, this HID xenon gas filled bulb can provide 3500lm brightness which is about 3 times brighter than halogen bulb. Besides, it is waterproof, dustproof and shockproof and will not interfere with wireless devices. - Energy-Saving and Long Lifespan: Lighting up through stimulating gas with electrons rather than tungsten filament, the lifespan of this HID xenon bulb can reach up to 3000hrs which is about 10 times of halogen bulb and 35% lower power consumption than halogen bulb. - Simple and Damage-Free Installtion: Do not have to dismantle the original wires circuit and it usually takes only 20 minutes or less to finish the installation, just plug and play. (Note: Before use, please remove the protection cover of the bulb.) - Universal Fits: This 9006/HB4 8000k xenon bulbs can be installed on most 12V cars as headlight replacement, low/high beam light replacement and fog light replacement bulb. - Warm Prompt: HID bulbs will not operate without ballast (not included) and this HID xenon bulb is compatible with both DC and AC HID ballast.