A desk fan is a small, portable fan that can be placed on a desk or table. Desk fans are usually powered by electricity, but some models are battery-powered. Desk fans are available in a variety of styles, including oscillating, blade-less, and personal. Most desk fans have a few different settings that allow the user to control the speed and direction of the airflow. Oscillating desk fans move the airflow back and forth, while blade-less desk fans use a spinning disk to create airflow. Personal desk fans are small and compact, and can be placed directly on the desk or table. Desk fans are a great way to keep cool and comfortable in warm weather. They can also be used to circulate air in a room, and can be helpful for people with allergies or asthma.