Ultrasonic water mist humidification, accompanied by low-brightness soft-light ambient light, keep you cozy all night. Small size but large capacity, 6.8L water last spraying for long time. 6.8L large capacity, lasting moisturizing and large amount of , relieve the skin hurt caused by dry air. Three modes to choose. Dual continuous ,dual intermittent ,single intermittent . Full of water can be used for 20 hours, continuous use of 10 hours automatically power off to prevent dry burning.