There is not much to say. The lamps are not nearly blue. "Ultra Blue, elegant effect" it says in the description, this is far from the truth. When specifying 4000K I was a bit skeptical, but then goes Philips certainly much closer to the information necessary for color temperature than the Billigkeuchten with 6000-10000K that can be found on eBay and rarely achieve the specified value. The color temperature, I am very unhappy, but at least the lamps of good and likely as branded goods to keep, hopefully long. I can recommend the product still does not, because the information is simply wrong and buyers certainly expected something else.