1.Battery powered fan with large battery capacity: This mode transforming fan comes with a 7200mAh battery capacity, which can work 6-21 hours under different speed modes without being plugged in. It fully charges within 5 hours. The USB personal fan is powered by USB( 5V/2A ) and compatible with PC/laptop, power bank, AC adapter, car charger, and other USB-enabled power sources. 2.Telescopic floor fan: Unique foldable design. The height of the desk fan can be fully adjusted from 3.54 in to 39.37 in (90-1000 mm). 180 degree adjustable head tilt angle. When folded into the compact desk mode, fan size is: 7.72'' x 7.72'' x 3.54''. 3.Multi-use portable design: With foldable design, this fan can be used as a table fan, a floor fan or pedestal fan. Thanks to its folding abilities it is convenient to store and save space. Easy carrying and long rechargeable battery life make it suitable for outdoor activities such as travel, camping, picnics, and fishing. 4.4 speed settings: With this portable desk fan's 4 speed settings, the working speed can reach 2.3m/s-4m/s with a strong wind. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.