The CIPA EVO Formance Spectras Xenon Blue Headlights (9007) bulbs emulate the wide variety of headlight colors that can be achieved through HID Xenon lighting systems. Colors inside the Spectras program range from performance oriented "Ultra White" and Blue colors to the more extreme Red, Green and Purple tones. EVO Formance 9007 Blue Spectras Xenon headlight bulbs are the bluest performance oriented halogen bulb on the market rated at 10000K, while projecting 1100 lumens. A mixture of pressurized xenon, halogen and argon gasses combined with a high quality filament allows for only 65/75W of power, while emitting upwards of 90/100 watts of light. In addition to emitting more light, they maintain safe heat levels, which give them a long bulb life. Their long life, low heat, increased tone and high quality filament will outperform factory headlight bulbs every time.