<ul> <li>HID (High Intensity Discharge) refers to lighting technology that relies on an electrical charge to ignite xenon gas contained in a sealed bulb.</li> <li>Unlike halogen bulbs, HID's emit a type of light that closely resembles natural daylight and is therefore easier on human eyes.</li> <li>In fact, HID lights are currently used in most sports arenas, stadiums, and train stations worldwide.</li> <li>Don't be fooled by lower end Xenon replica bulbs sold at most retail shops.</li> </ul>