- Fine atomization technology with ultrasonic mesh system for more effective absorption. - Portable and compact design with one-click operation and 3 adjustable atomization levels. - Quiet operation with a noise level of 50 dB or less for greater comfort. - Safety system with automatic shut-off function when the tank runs out of liquid. - Dual power source via USB cable or with 2 AA batteries for home or travel use. - Includes complete accessories: nozzle, adult mask, and child mask.