The fan motor drone was too noisy for me to use in my office while working, so I returned the item. It was louder than the motor on the cheap vaporizer I wanted to replace. Might be OK in a less quiet environment. Less mist than I expected, and it tends to flow down rather than be projected upwards and outwards. Item looks great, light options are good. Manual could be better written. Explanation of changing the light colour and brightness was not clear (non-English-speaking writer, I suspect). I eventually worked out that the first click gives continuous colour variations, with a second press to stop on the current colour. Pressing again repeatedly lets you switch between a series of fixed colours in bright and dim modes.