Zone Tech One Pair D1S 6K HID OEM Replacement Light Bulb &ndash; Premium Quality D1S 6K HID OEM Replacement White/Blue Light Bulb &#9658; 3X BRIGHTER - The Zone Tech HID bulb has a superior lighting technology. Instead of having a filament inside the bulb, it is replaced with xenon gas. When the xenon gas ignites, it produces a vivid and bright light that is 3X more powerful than that of a halogen bulb. &#9658; NATURAL LIGHT - The Zone Tech HID bulb emits a type of light that closely resembles natural daylight and is therefore easier on human eyes. The Zone Tech HID bulbs are no match for the intensity, purity, and efficiency of high intensity discharge headlights. &#9658; PREMIUM QUALITY - The Zone Tech HID bulbs are manufactured under the strictest of quality control. The ballast bulbs are made from premium quality materials to ensure durability and longevity. &#9658; WIDELY USED - The Zone Tech bulbs uses HID (High Intensity Discharge) lighting. HID lights are currently used in most sports arenas, stadiums, and train stations worldwide. &#9658; DURABLE - The Zone Tech HID bulbs are designed to run for over 5,500 hours or 229 days; which is usually good for life to your vehicle.