Naiver Pen Size Mini Travel Portable Humidifier Stick -- Anti-Aging, Moisturizing and Quiet USB Charging for Cool Mist Super Portable and Smallest Size -- Just like a pen that in your pocket. When you are reading in the leisure time, carrying it to enjoy the afternoon's quiet and moisture. But it can make more exquisite mist than big humidifier do, enough to meet your need. Whisper-Quiet Ultrasonic Operation-- Less than 20 db means that this humidifier is one of the most silent ever made. When you sleeping or put it in the baby room, its voice is so little that like the voices of flowers as not to disturb you and your children. Unique Design--Its streamline design will give you a delicate feeling. Its 1-controlling button like a smooth stone ,compact and easy to use. 1m power cord will give you more convience life. Like a cute without picky baby--The atomizer plate has been specially treated and can be applied to any PH level water. Powered via USB port by computers, cars, power banks and so on. Perfect Gift-- Humidify your living space to prevent dry, stuffy air and flu/cold germs infecting your loved ones. Prevent dry and chapped skin in dry winter months.