Automatic Purification- The portable mini humidifier is equipped with a purification steel plate (cationic active ingredients), which uses cations to adsorb and purify before humidification. It can provide a safer and more reliable humidification experience for your family. Start today to create perfect conditions for easy breathing.Portable Mini Humidifier250ml portable and compact design (2.75*5.9 inches) is very easy to carry with you, with strong sealing, no more worrying about accidental leakage of liquid. Perfect for travel, bedroom, office, effectively moisturize dry skin and help you reduce skin peeling.Smart Auto On/Off Mode and Auto OffDouble click to activate smart car mode (display "AA"). Equipped with a smart chip and vibration sensor, the device turns on when you start the car and turns off when you park. The built-in water level sensor automatically turns off when the water level is below the safety threshold.Two Misting ModesThis mini humidifier has two modes. When the button is pressed for the first time, it will spray continuously for 6 hours. When pressed again, it will spray intermittently (stop for 3 seconds) for 12 hours. The 250ml large capacity produces mist for a longer time.One-button ControlThe portable USB humidifier is very easy to operate. One-button control of all functions, just press one button to set the mist. Make your life easier!