1. BATTERY Operated & USB-C POWED: Internal large rechargeable battery, this base fan can be completely charged within 5 hours with the included USB-C cable, and after full charge, 6 ~ 21 wireless operating hours depend on different speed and oscillation. The USB personal fan is strengthened by USB (5V/2A) and is compatible with PC/laptop, power bank, AC adapter, car charger and other USB featured power supplies. Note: Please charge before the first use 2. It is measured from a distance: Infrared remote control 13 FT allows you to control all features and provide more flexibility and appropriate experience. 90 ° automatic released cooling fan provides more effective air flow distribution and large wind area and allows you to enjoy cool air in different ways. A life savings for all your family in hot summer 3. Flexible folding and telescopic design: The height of the standing fan, 39.3 ', 90 °', 90 ° ', 90 ° °', 180 °, adjustable slope angle, more adjustable fan: Recelable and foldable way can be designed as a table fan. You can use the bedroom as a standing fan, you can put it at home, in your office or outdoor activities, such as travel, barbecue.