The Portable Car Humidifier USB Mini Humidifier Uses One Button Control, One Button Controls All Functions. All You Have To Do Is The On /off Button Every 1 Second To Control The Mist.(Warm Tip: Soak The Cotton In Water For 3-5 Minutes For The First Use, And Then Put It In The Catheter).This Car Humidifier Mini Humidifier Has Two Mist Modes: Continuous And Intermittent Mode. On Continuous Mode, It Will Automatically Shut-off After 8 Hours. On Intermittent Mode, It Will Automatically Shut-off After.This Car HumidifierColorful Desktop Cool Mist Humidifier Has Low Noise Design (lower Than 30dB) Which Creates A Quiet Environment And Brings You Great Night Sleep And Disturbance- Work Environment.
