I must say I was very skeptical of this product, if I buy it but I was surprised. I had ordered only used 2 pieces but still ordered more because I want to use it for my lamp over the dining table. The brightness is sufficient for this situation, table 2 meters long and the lamp 1.2m above the table. But one should not expect miracles, I have considered whether I therefore replace my halogen spotlights in the bathroom, but there is not sufficient as the only light source. So if you want power saving plenty for indirect lighting or for light sources which must cover no large radius, is well supplied with these LEDs. All who wish to exchange their radiators which serve as the only source of light in this room should be looking for something else, but they are simply not designed.