This LED light source is the first energy saver set, in which I do not adversely rougher the good old light bulb. This LED lamp: - Has a pleasantly warm light to be without color cast - With 330 ° viewing angle, there are no shadows on the ceiling more - It hums and buzzes not - Full light output immediately after switching - Does not contain any toxic substances and is therefore also suitable for children's rooms. consumes only 11 watts