K7C product features: 1,The two versions of K7C 150W and 110W are quite different, please read this paragraph before ordering to decide which version to buy. 150W has higher power and higher brightness, but we only recommend using it in projector headlights; 110W adopts the design of K5C 110W version, which optimizes the driving scheme and heat dissipation system. One model is the exception, this difference has no effect on the H4 model, both the 150W and 110W H4 models are suitable for use with reflectors. 2, there is no obvious difference between the K7C 110W brightness and the K5C 110W brightness and the K7C performs better in some projectors. As the K7C has an additional copper tube and an improved cooling fan, the operating temperature will be reduced by around 8C to 10C. The H7, H11, 9005, 9006 and 9012 K7C models add a temperature sensor to the chip position, which has a positive effect on chip overheating protection. Please note, the temperature sensors for H1 and H4 are located at the bottom of the copper tube, AND reduce the H1 and H4 by 5W per lamp compared to other models. 3,Some Korean brand cars are not suitable for using bulbs with too high power, please consult us before ordering. Special reminder. 1. Some vehicles need to install a decoder after using LED, otherwise the following situations will occur: One of the two light bulbs is off or flickering. A fault light appears on the instrument panel. after the low beam is turned on, one of the bulbs turns on the high beam function uncontrollably. These situations indicate that you need to modify the decoder. 2. Adding LED bulbs is a kind of modification, which is not applicable to all cars. Some models require the front bumper to be removed to install the LEDs, and some installation fees may apply. We will not bear any installation costs. Please try to light up the LED and test before installation to make sure there is nothing abnormal before removing the front bumper to avoid unnecessary costs. 3. LED has temperature adjustment function. As the temperature of the bulb increases, the power will drop to a certain extent. This is normal and will help the lamp last longer. The power provided in the data is laboratory data and does not represent the power after long-term operation. 4. This product is not suitable for fog lights, deposits will reduce the life of the cooling system, if you need to use it in fog lights, please contact the staff, we will recommend a more suitable bulb for you. 5. The 4300K LED that comes with this product is not the same color as the 4300K Halogen. 4300K LEDs are yellowish, 4300K halogens are reddish, they have different color coordinates. If you are looking for the same color as the halogen lamp, please buy the halogen lamp directly. 6. Additional adapters are required for some vehicles to install H1/H7, if you are not sure whether your vehicle needs an adapter, please contact our staff. Orders from this link do not include additional adapters Operating voltage: DC 9-12V Chip:150W=7035 LED Chip110W=K-XP LED Chip Operating temperature: -40degC ~ +80degC Colour temperature: 6000K/4300K Chip power: 110W/Pair,150W/PairH1 and H4 models will be 10W/Pair lower than other models Design. All-in-one design with cooling fan With canbus function System life. >50,000 hours Design. All-in-one design with cooling fan Heat dissipation principle: aircraft aluminium 6063 Actual power is 90% of theoretical power. Car suitable models. 90% of car models on the market Product includes A pair of LED bulbs