We have in the hall 2 lamps with 2 bulbs and there was my idea out with the 4 x 25 W and purely with the LED's ... ... Well ... Have on July 18, 2013 bought four pieces because they were reasonably priced compared to other manufacturers. Today on 16/01/2014 still works exactly one of them (Let's see how long that still holds). I go broke too quickly. I trade for LEDs from another manufacturer. Shame