Product Information Quantity: 2PCS Color Temperature: 6000K Lumen: 40000LM/Pair, 360 illumintation Chip Type: 4-sided 12Pcs Samsung CSP Chips Voltage: DC 9-16V Power: 80w/Pair Characteristics: Fan, External drive- Pls make sure there's enough space to install Car suitable models: Fit for 95% car models on the market Warranty: 2 Years Note 1. This item is with a ballast, which have a temperature adjustment function. As the temperature of the bulb rises, the power will drop to a certain level. it's normal and it will help the bulb to prolong its service life. The actual power provided can be 80%~90% of the theory data 2. This bulb is WITHOUT canbus system, fit for 95% of the vehicles. For vehicles need canbus system it may show errors or flickering after using the LED. It's not quality problem, If this kind of problem occurs, you need buy additional decoders to eliminate errors or flicker. 3.About the adapter: Some H7/H1 lamp holders of some cars are not standard designs, and additional lamp holders are needed . Pls contact customer service if need help