9006 bulbs are special kinds of bulbs unlike traditional and incandescent bulbs. These are the improvised versions of the projectile halogen bulbs. The number in their name represents the numeric coding that stands to show the bulbs' energy consumption for United States only.
And those numeric values have some association with the colored lights these bulbs emit apart from denoting required energy level consumption to get light supply. The broader category of these bulbs are made only for US and are categorized with such numbers. There are lamps like 9005, 9007. And all these are halogen bulbs that we know more commonly. For US, people prefer to use 9006 than other bulbs of the concept. These bulbs require 55 watt and 12.8 volts of power. Most of the 9000 series bulbs require similar ranges of power like 55 to 65 watts. Their voltage requirement is stable at 12.8 volts. Different numbered bulbs produce different amounts of beam. The low and high ranges of beaming with their frequency and wavelengths create different colored illuminating lights.
These bulbs are modified versions of European halogen lamps but they aim at economical use by less energy consumption. European people prefer quality of the light while American people prefer maximum quantity of outputs. Only in 9006 bulbs, you can get five colors like titanium white, pure blue, ultra violet, hyper-white and yellow. For the unique colored HID lights, people prefer to use them to increase the beauty of their car look. You can think about putting 9006 on your automobile to enhance its beautiful look.