I have this Standlichtbirnchen gakauft because I have already installed the lighter H4 "Extreme Vision" by Philips and the old-5W bulbs looked too yellow next to the white light of the new H4. Now everything is harmonious! Bright, white and what was most important to me - not cheesy blue. This light evaluates each vehicle with normal bulbs to 100% and also ensures better visibility. In my family, the third car was already equipped with it and we recommend these bulbs (along with the Extreme Vision) uneingeschrenkt on. The lifetime is about half an "ordinary" light, it bothers me but not for the benefit outweighs clearly.