These spots are beautifully finished, perfectly replace the existing halogen lamps with only a 10-th the power. However, you should definitely pay attention when you connect to a dimmer that these lamps lighting technology absolutely do not mix with other halogen lamps in the room (which may also be dimmed). Dims to halogen lamps, the light becomes more and more yellow, this is not at the LED spotlights the case, the light will only weaker, but remains bright white. From our living room I had it after an evening again ban, it just fits not together, the more you dimmmt the LEDs, the more falls the white light in the otherwise illuminated by halogen lamps rooms on ... shame ... I would have all switch lights in the room on LED, what have I first moved for financial reasons.