1.Portable Small Humidifiers: Mini Cool Mist Humidifiers Easy to Carry,Compact Design,Very Easy to Carry Around.Large Volume and Fine Spray for Increasing Space Humidity,Preventing Static and Dust,Relieving Dryness of Nose and Throat,Creating a Comfortable Living Environment,Uplifting Spirit and Relieving Stress. 2.Small But Great:The Ultrasonic Humidifiers Does not Make any Sound When it Operates.It is Completely Silent and Does not Make any Annoying Noises.Built-in 500mAh Rechargeable Battery,The Default Continuous Atomization When Working with Battery can be Used Continuously for About 2 Hours.Can be Charged from a Car Charger,Power Bank, Computer or any other Device with a USB port. 3.Easy To Use:Double-Click The Function Key to Open The Continuous Spray Mode,Continuous Spraying 6 Hours After the Automatic Shutdown,Short Press Once,Open Intermittent Spraying Mode(Spray 3 Seconds Stop 3 Seconds).Continuous Work 12 Hours After the Automatic Shutdown.Short Press Second time Off the Spray.Long Press The Function Key to Open The the Colorful Lights,Long Press Second Time to Open the Dazzling Lights,Long Press Third Time to Fix the Light Color. 4.Safe and Reliable Materials:About 6-12 Hours.2 Kinds of Timing Time,Continuous Spraying 6 Hours Automatic Shutdown,Intermittent Spraying 12 Hours Automatic Shutdown to Protect the Equipment.Giving You and Your Family a Great Sense of Security.