Rechargeable clip fan with automatic oscillation Stepless adjustment allows you to adjust the airflow to your preferred level. Clip on to hold it in any position such as tables and chairs. The oscillation can be set in 2 patterns of 45/90 degrees. There is a hook hole on the bottom of the main unit, which can be used in 3 patterns: clip, tabletop, and hooks. Built-in 5,000 mAh battery provides up to 65 hours of continuous operation on a full charge.