Ordered week: very fast delivery in 2 days, without charge premium and package arrived in great condition. Very effective diffuser with two levels of misting and possibilities in color choices of light and programming. 3-4 drops of essential oils are enough to perfume an office of 15 m². In addition, discrete noise, compact and aesthetic object. What could be better? It remains to judge its reliability over time. So for now, very happy with this purchase.