They are very dim, I had to increase the brightness to 14-16 to get the same result judging by the eye with the Adafruit strips set to 4 were (what is the minimum for color). Color rendering isn't exactly the same, but I won't mix them, so I don't care. They use the same non-pixel LEDs as the Adafruit, with 4 protrusions visible under the lens. I'm happy with them.
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