【Ultrasonic + Heating】 Currently, "maintaining appropriate humidity" is considered important for virus prevention, as dryness can reduce the protective function of the throat's mucous membranes. Therefore, a hybrid humidifier has emerged, combining an ultrasonic type that vaporizes water with ultrasonic waves and a heater that heats the water to increase humidification efficiency. The moisturizing mist released by the ultrasonic method (which vibrates water into a mist) + heating spreads throughout the room, allowing both body and mind to relax. 【Large Capacity & Aroma Compatible】 This product has a large 4.5-liter capacity, allowing for up to 20 hours of continuous use. Refilling before bed ensures continuous humidification even while you sleep. It is ideal for the autumn and winter seasons, helping to prevent colds, dry noses and throats, static electricity, allergies, and asthma. Aroma oils are also supported (not included). 【Product Specifications】See image 18 Body Size: W21.3 x D21 x H31cm Color: White Weight: 1.76kg Capacity (Tank): 4.5L Material: PP With Remote Control PS Mark Type: PSE Certified ◆ Used for only one season, but in good condition. Please consider only if you understand.