Product description : introduction: notes: please add water below the max line. Do not press the "mist" button when the tank is empty. If there is no water but press the "mist"button, the diffuser will be burned out. Description: the first thing you will notice when you power on this diffuser is the plume of mist that rises up, formed by the inside water droplets vibrating. Run your hand through the mist - its cold. The oil isnt burned like a traditional diffuser meaning the aromatherapy benefits are retained in the oil. Now click the light button. If you want to run the diffuser without any lights on, just press the light button for a few seconds. Features: approximately 10 hours on one filling large tank content: 300 ml coverage area: 25-30 sq. M. Package contents: 1 300 ml aroma diffuser 1 charger adaptor (the ac adapter was inside the water tank) 1 measuring cup 1 user manual warnings: showpin is the only legal owner and seller of the trademark showpin, we are not responsible for the fakes you bought from other tortious seller. Please be careful. We take full ownership and responsibility for the quality of our products. Showpin -uspto# -4901098 is a registered trademark protected by us trademark law. "showpin products are sold by authorized sellers only".