Thank you for viewing. - Model: No. 80 - Water supply method: Tank type - Humidification capacity: Continuous use for up to 12 hours - Applicable area: Up to 6 tatami mats (approx. 10 square meters) - Water tank capacity: 2.5L - Volume: Quiet design (80dB) Tank-portable easy-fill aroma humidifier (HM04 WH) I purchased a smaller size because the 8-tatami mat size was out of stock, but it didn't fit the size of my room, so I am selling it to buy another humidifier. It is a popular product that is also out of stock at Nitori stores. Please consider it. *I have not used aroma oils. Please understand that this is a used item as I have used it for about 3 days before purchasing. There is no box.