The Aroma Personal is particularly suitable for the home or workplace as they do not pose a fire risk as compared to candle burner. Moreover, it does not burn away oxygen* (in the case of candle burner) and can be used in bedrooms/ offices without the need to open windows. Power consumption: 3W Dimension: (L)18.8cm x (W)6.8cm x (H)21.3cm Coverage: 300-500sqft Weight: 500g (Stand alone or can easily be mounted onto the wall) Adjustable days for operations Aluminium bottle capacity: 180ml