DAWNKNIGHT K5C PLUS 140W H7 Canbus Led Bulbs 4300K LED H4 H11 HB3 9005 HB4 9006 Double Copper Tube Fog Light 12V 2PCS Features: The new side-by-side double copper tube design reduces the probability of failure and is more reliable and stable. High-power LED chip, brightne increased by 450%. High-speed ball fan for better temperature drop. Operating Voltage : DC 12V Operating Temperature: -40degC ~ +80degC Color Temperature : 6000K/4300K Starting Power : 140W10%/Pair(H4,H1=100W10%/Pair) Design: All In One Design With Cooling Fan With canbus function SystemLifespan: >50000hrs Design: All In One Design With Cooling Fan Heat Diipation Theory : Aviation aluminum 6063 Car Suitable Models: 90% of models on the market The K5C PLUS has a temperature adjustment function. Starting Power 130W10% /Pair is the initial power and helps to eliminate the fault light check error on some vehicles. As the bulb temperature increases, the power drops to a certain level. This is normal and will help prolong the life of the bulb. The power provided in the data is laboratory data and does not represent the power after long-term operation. H1.H4 due to structural reasons, the power will be lower than other models, about 100W10%/Pair This product is not suitable for use in fog lamps, sediment will reduce the life of the cooling system, if you need to use it on fog lamps, please contact the staff, we will recommend more suitable bulbs for you Products include: A pair of LED bulbs An English manual Product guarantee: 100% brand new product 100% original factory production Provide 1 year original factory warranty service Special reminder: If you plan to buy this model (D1S/R/C, D2S/R/C, D3S/R/C, D4S/R/C), please be prepared to modify the power plug. You cannot use any HID connector (AMP, KET, KET2, etc.) to connect this LED bulb. Before installing the LED, you need to remove the HID lamp ballast (ignition device), and the LED needs to be directly connected to the 12V power supply.