With effective high-frequency technology, water is converted into micro-fine mist and emitted into the room air. It automatically shuts off when it runs out of water. When the unit is turned on again, red LEDs indicate that it needs to be filled. When the air in the room is dry in winter, as well as during the warm season in air-conditioned rooms, the humidifier provides pleasant humidity immediately around you. It has a USB-C connection that allows the mobile humidifier to be used virtually anywhere. The integrated LEDs and visible mist output make the personal ultrasound a real eye-catcher.