This bulb looks nice; it provides many color shades, various linkage modes thereof and ON / OFF command. Except that when I turned off the first time it is turned back alone! Hmm not very interesting that! So now I can not take the risk, I cut the light switch. The second flaw is that whatever the mode is selected when it is turned off and back on that it calls into Strombo mode. Quite unpleasant. This is unfortunate because otherwise there are three brightness levels, many cool colors ... Good value too, so do not be too demanding !!