Bought this for my daughter as we already had one and she loved it and wanted one. Plastic not that you'd know with the quality wood effect finish nice multimode diffusing and lighting simply fill up and select which diffusing, which lighting and for how long you want it to run. Biggest tip is buy good quality oils too many cheap aromatherapy oils on the market that are just terrible you could fill with oil and no water and still not smell them, however we bought from our local yankee candle store and three drops in 100ml of water and hey presto a lovely but not overpowering fragrance that in my opinion is better than any plug in air freshener we've bought before.