Warranty & Return Policy:2 Years Warranty. (If any quality problem we'll send free for replacement and full refund),please contact us first. Free return and free return shipping label can be provided if needed (contact us). Please refer to our return policy for details. Features: Energy saving, environmental protection, Stable performance, through strict test, Use safer driving in the car For most cars, just Plug-n-Play,no ballast required. Yet for some European vehicles or new vehicles, load resistors maybe required to avoid the error code or blinking. When installing this bulb, please make sure to turn the car off, and key out. .
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