What it is: A portable USB humidifier that's perfect for travel, work or bed to keep your skin continuously hydrated. What it does: This easy-fill humidifier features ultrasonic wave technology for quiet, efficient cool mist control. It offers up to eight hours of continuous mist, or 12 hours on the intermittent setting. Soft LED illumination lights it up when the room gets dark. How to use: This humidifier can be used wherever you go for fresh,