Portable Personal USB Humidifier From Myhumidifier (Violet) USB Powered and Portable Design - Perfect Office, Desk, and Travel Companion. 30ml Per Hour of Mist with an Elegant Flower Design to Enhance Your Surroundings. Can Provide Relief to Allergies as well as Cold and Flu Symptoms with added moisture in the air. Use Cold Water on a Hot Day for a Refreshing, Relaxing Change. USA Patent Pending