Serene House sets new standards in fragrance evaporation. Blob is as simple as it is practical. It features a closed water container that can easily be removed from the base and filled directly under the tap without having to unplug the entire machine. The life cycle tested ceramic oscillator technology delivers vapor enough to fill a space of up to 15 square meters. Add 5-10 drops of your favorite essential oil. Blob will run for a total of 6 hours without a refill.