I bought it at a discount for 675 as one of the cheapest smart lamps with RGB, see what it is. For me, not useless, only warm white is not delighted. Quite heavy, the lamp from Ikea Tertial is not strong enough to hold it. Its pros: Adjustable color and brightness, saves the last setting if you turn off the switch (at least the color and brightness are saved). All sorts of modes, on-off by time. Has some cons: Warm light gives off a little green, its brightness is less than daylight white, the shade of warm changes slightly when the brightness changes. It looks like it is created by connecting the red and green diodes. In general, you can do better, there is a clear flaw. I did not find the opportunity to set the color exactly by the numbers, but it would be convenient.
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