The biggest drawback for me -and a Enttäuschung-: The water jet is not sufficiently colored. Even if you take a shower in the dark the color effect on the water Steel marginal (my water pressure is not bad, because it should not be).
In short, the color ring on the shower head is a very good orientation for the temperature range of the water flowing through - but who expected a shower experience with multicolored shower steel, will probably be disappointed by the product