Anyway, this product can be used in a simple humidifier, or serve as essential oil diffuser, and this is, in my view, its usefulness becomes really interesting.
In fact water vapor is created by high frequency vibrations, and there is no heating, which could alter the benefits of essential oils (the latter may even become harmful when heated).
On the front you can vary the amount of water evaporated with a thumbwheel, and by successively pressing the center button you can get 4 temperatures of evaporation. All this is unfortunately not explained in the manual, but one thing is for sure no position "ultrasound and / or vaporization" as some seem to claim.
What is regrettable is uneven quality plastics. The front did nothing wrong, the shiny plastic and the blue display is perfect, however the quality of the plexiglass tank is very average. At the exit of the box mine was already scratched everywhere, so a council clean it with a soft cloth!
It is also regrettable maintenance recommendations are too restrictive, but have, in my opinion, solely to cover Beurer in case of malfunction.
The use of an ideal diffuser oils 10min every hour, and there, unfortunately there is no possibility of timing, it is unfortunate if this product would have bordered on perfection.
A small tip, apply the essential oil of citronella on platelets provided for this purpose, and bye bye mosquitoes during your summer evenings.