Be controlled via buttons on the radiation head he shower - and which are carried out not so very high, as the effervescent suggests itself. You have to press very firmly to activate a spray mode and to deactivate another, otherwise you sometime half pressed all the buttons and not really selected what ....
As they prove their worth in the long term remains to be seen using. We now see them in the apartment in the application and be in a few months how it works.
The rain functions are great and very comfortable, the massage jets on the other hand not so much. These are very hard.
As Resumé applies - no high-end shower, but in aesthetics and function on 08/15