Philips Diamond Vision H1 bulbs are a styling product for motorists looking for a light that will stand out from the crowd. The Philips Diamond Vision gives the headlight a distinctive blue look thanks to its colour temperature of 5000K. If you are looking for greater light output, then this bulb is not the right choice for you, as this product has been specially designed for styling and is not approved for road traffic within the EU. You should choose Diamond Vision if you want to enhance the look of your vehicle with a very special blue light. The standard unit for colour temperature is given in Kelvin (K). Brightness is measured in lumens. Standard halogen bulbs produce yellow light at 3200K. Xenon HID technology produces white light at 4200K. The colour temperature for bluish white light is 5000K. The colour and brightness of the headlights in the picture is not an actual representation of the Philips headlight light. Diamond Vision can be used without making any modifications or modifications to your vehicle. They only need to be replaced with the bulbs you are currently using. This product is not road approved within the EU. Philips Diamond Vision car bulbs do not comply with ECE R37 regulations and are not approved for road use. We therefore do not accept legal responsibility for any lawsuits that may occur if these non-street approved bulbs are used on public roads or in other road situations.