Philips Diamond Vision H1 5000K Ultimate White Light 12V 55W (Pack of 2) 12258DVS2 Original Philips Item, imported from Philips Europe, made in China. Diamond Vision series do not have the COA authenticity code (which can be found mainly on Philips Xenon bulbs). For Official Philips Data sheet of this item, please contact us. Philips Diamond Vision Halogen headlight is the ultimate style upgrade for your car with 5000K white light. With the specially designed blue coating. DiamondVision makes you stand out from the crowd. The color temperature of these bulbs is 5000K. The standard unit for color temperature is Kelvin (K). Brightness is measured in lumen. Standard halogen bulbs produce yellow light at 3200K. Xenon HID technology produces white light at 4200K. The color temperature for bluish white light is 5000K. The color and brightness of the headlights in the visual is not an actual representation of Philips headlights. The whitest upgrade available. The Philips Diamond Vision bulb does not offer a greater light output but provides a white light for enhanced styling Philips Diamond Vision range is not road legal in the UK\USA and other countries. It is intend for off-road use only. Please carfully check this before using these bulbs. We are therefore not legally responsible for any future action relating to the use of these non-road legal bulbs if used on public highways or any other on-road situation.