I have the normal radiator replaced with the LED bulbs because the normal bulbs but often times went bust. These LED bulbs, comply with the 25 watt bulbs wholeheartedly. They give a very bright, but not unnatural light. In comparison, the normal lamps are more yellowish. The LED bulbs are slightly smaller than the conventional bulbs of the form and are, as can be seen in the picture, of white color. But for me not disturbing. I can still give no indication of the lifetime.