The aroma diffuser is located at my home in the dormitories.
Filling with distilled water is simple, a few drops of oil and are set to go.
The color changing function is very pleasant and evenly; no pushy colors and acceptable period of time between the change. Especially my daughter like this feature because we often use these same as "Einschlaflicht". It is to hear a low hum, which personally does not bother me, since this runs smoothly and can not really tell.
It is possible to keep a color; ie there are 3 variants of using the diffuser with light: color change, a desired color or you choose a muted white / bluish light.
All in all: Light condition, fulfills its purpose, value for money is justified.
Everyone wants a scenting or want to bring special purposes with aromatic oils, can use this diffuser.