This diffuser is great! It has a very eye-appealling design that fits with any home decor. The button is very sensitive but has a quiet beep when pressed which is really nice. The single top is easy to remove and simple to do one handed, unlike other diffuser that require several pieces or steps. There is the option to use with and without the color changing light. The light does flash for a few seconds when it is about to turn off - the run time is approx 10 hours. Overall this diffuser has been wonderful.