Precautions to be read before purchase: CANbus 12V: what is CANbus: solve the module program error after installing LED (some cars don't light up, or flash, one side doesn't light up, or the instrument display is wrong). 90% of the car errors on the market can be solved! However, it is not suitable for high-end cars of German brands, such as: B@B @ A@v @O (brand name cannot be used in full) if you have any doubts, please consult customer service before purchasing! thank you CSP 12V is applicable to general 9-16v vehicles (both conventional vehicles and DC 9-16v vehicles can be used). CSP 24V is applicable to 9v-80v automobiles, trucks and trucks. Main advantages: new automobile headlamp with special functions Size: minimum size, suitable for most vehicles. Beam: the line and beam shape under the spotlight are good Chip: CSP chip, high quality and long service life; Rivet fixing (many other headlamp chips are easy to screw in and fall off.) Material: metal, more luxurious, long service life clip slot: solid metal clip, 360 degree rotation adjustment beam adapter: prolong service life and plug and play external adapter, Fan: high speed 12000rpm, good heat diipation effect, long working time, good sealing, waterproof grade up to IP67, features: Remarks: power supply: 125W / set, 60W / bulb. Effective power: 30 5W / set luminous flux: 20000lm / set working voltage: DC 9-80v (applicable to 12-80v vehicles) Color temperature: white 6000K gold 3000K warm white 4500k light blue 8000K ice blue 25000k IP67 waterproof and dustproof grade, beam angle 360 , material: Aviation 6063 aluminum profile, working temperature: - 40-150 , service life more than 50000 hours Purpose: two cooling channels for headlamp and fog lamp, one aluminum heat conduction system and 360 degree heat diipation Components include: 2 LED headlamp bulbs.