The Homedics Total Comfort Portable Humidifier is a mini humidifier with a cool mist humidification method that lasts for up to 4 hours. It features a timer control and operates on a USB or electrical power source. This portable humidifier is perfect for personal use and comes in a sleek white color. The HoMedics HUM-CM10 model offers convenient functionality and improved indoor air quality for a comfortable environment.