SULVGO Highly Portable Semiconductor Cooling Fan With Built-In Extension Cord And 9000mAh High-Capacity Battery, Can Charge Phones Anytime, Handheld High-Speed Fan With 100 Wind Speed Modes, 11000RPM High-Speed Airflow, Foldable Neck Strap, Suitable For Home, Travel And School, Also An Ideal Gift For Boyfriends, Girlfriends And Best Friends