Pro Breeze Ultrasonic Aromadiffuser really met my expectations. I've been using one for the past year and bought two more this Christmas for my mum and nan who were very satisfied with the product. The diffuser works quietly, has four different time options, continuos, every 10seconds, an hour or two, after which it turns off automatically. It also has plenty of pretty colours to choose from which makes it useful not only as a diffuser but as a night light as well. Love it! Definitely recommend it!