I have now fitted the H1 together with the H7 (low beam) by Philips in my Golf 4. The installation is also for a layman like me to create. It takes a little longer, but once you get out there it goes fast. To my first impression: The H1 shine very good light and definitely better than the original lamps of the Golf 4. Philips describes the color of light than 4000k with bluish effect, which is not true. From visual forth (not to take more deeply into the physics around) it is not at all 4000k, as this would be almost pure white. In fact, the lights are definitely whiter than the original lamps (and also appear whiter than the H1). However, I miss a bluish influence throughout. Nevertheless, I am very satisfied, because the illumination has now improved a lot and the lights also remember appear as yellow. For halogen lamps certainly a very good conclusion. In addition, in the package two W5W (parking light) were listed. These do their job well.
With regard to the term I can not say anything. Should they soon break, but I will correct my review.