Relatively cheap RGB LED with impressive brightness

Have the lamp bought in addition to a set of 3 and am very satisfied so far.
The lamps are just easily be able to serve with white light is very bright and despite lampshade as lighting for an average room. When you turn, there is indeed a very short delay (0.1-0.2sek?), But then the light is at full brightness there.

To RGB function:
The colored light has a noticeably lower brightness, but is great for color effects.

Dimming Function:
The dimming of the lamps work properly, however, you can hear just as the brightness change a marked sums, which, however, usually (if not help short changing the brightness) by itself disappears.

All in all so far completely satisfied.