F11 Enhanced Portable Desktop Fan Enhanced portability and longlasting power: powered by a rechargeable 4000mAh battery, the fan is slim and easy to carry. It provides extended cooling life and is suitable for use in the bedroom, office, or outdoor travel. Fivespeed adjustable settings with ultrawide airflow: offers five wind speeds to fit different needs. The ultrawideangle square flow distribution sends speed air from all directions for broad coverage and a consistent cooling effect. 180degree foldable design and ultraquiet operation: folds 180 degrees for handheld use, table placement, or hanging, giving flexible placement options. Its quiet design makes it suitable for work, study, or sleep. Dualmode power supply: can be powered by the builtin battery or via USB, ensuring operation even when there is no power socket available. Practical use scenarios: ideal for desk use at home or in the office, suitable for outdoor travel or camping, and convenient for small living spaces such as dorm rooms where space is limited.