First of product: have mounted in a lamp four. All radiators were processed perfectly. They settled precision screw into the frames and made a solid impression. As the product photo recognizable, the individual LEDs are located in the viewing area. I read again and again criticism about the fact that the LEDs are visible. I see it in advance and decide whether I can live with it. Thus, it has then done. The light color is always so important: warm white LEDs is in principle not the yellowish-white light that we are used to from halogen lamps. These lamps as bright as described and have subjectively rather a slight tendency to green. In any case, they are not in this cold white. I have a 60-watt ceiling heating (bulb) replaced with four radiators with only 12 watts. The light is better and it is a simple replacement of existing incandescent bulbs. The price is right also. I'm going for more Umrüstvorhaben revert it.