Especially the presentation of the lamp is simply FALSE. It announced in effect "7 brightness levels, 7 colors changeable". Now as you can see from the pictures, there are only three colors changeable (3 and not 7) and 5 brightness levels (and not 7), also with a limited amplitude (between minimum and maximum) . However, all 3 colors are very different, which was the expected result.
In conclusion, this lamp is still a good acquisition (but I did that for today! Remains to be seen over the long term) mainly because of its good value for money.
If you need a very strong light, rather choissez with max greater than 700 lumens.
Finally, Amazon should be careful about the truth of the texts that are displayed his sign, and perhaps punish sellers who write clearly wrong things.