How to choose color temperature:The smaller the color temperature, the stronger the penetrability, and the greater the color temperature, the weaker the penetrability. For example: 3000K is good for rain and fog, and it can be seen farther, but the eyes are easy to visual fatigue. 6000K is the most comfortable color of the eyes, similar to the color temperature of sunny days. 8000K and 10000K is cool, but the penetration is not as good as 6000K. 25000K Ice blue 58000K dark blue color temperature is very cool ,light penetration is not good,Irradiation distance is not far. Please select the color temperature correctly.Color temperature does not represent brightness, only represents color.Different application, choose different color temperature.This price include 2 PCS LED headlights.H8=H9=H11 they are the same LED Chip: COB ChipLifespan: 30000hrsBeam angle: 360 degreePower : 80W/set, 40W/bulb,Color Temperature :3000K 6000K 12000K ,Lumen : 12000LM/set, 6000LM/set.Operating Voltage : DC 9-32 VOperating Temperature: -40°C ~ +80°CHeat Dissipation Theory : Aviation aluminum 6063•What is color temperature?Color temperature is a way to describe the light appearance provided by a light bulb (lamp).It is measured in degrees of Kelvin (K) on a scale from 1,000K to 58,000K.What are Lumens?Lumens measure how much light you are getting from a bulb. The more lumens, the brighter your light will be. When you’re looking for new lightbulbs.1.All items will be sent out within 1~2 business days when your