Features: 1. Unique retractable folding design for easy carrying. Can be folded and unfolded as a desk fan, can be unfolded to 100cm as a standing fan. 2. All-in-one, expandable and foldable multifunctional mini fan. Can work for 5 to 20 hours on a single charge. Works quietly and undisturbed while working, studying or sleeping. You can adjust 4 wind speeds. 3. The included cable can be easily powered by the USB port on a PC, laptop, power bank or USB AC adapter. 4. Perfect for home, office and outdoor use. Specifications: After contraction: 36cm Upright: 100cm There are two types of batteries: 3600mAh Working time: 5-24 hours Charging time: 4-5 hours Noise decibel: 30-40ab Discharge power: 1.3-4.8w Charging voltage: DC5V/2A Working wind speed: 2.3-4.0m/s Color: pink Material: Alloy + ABS + PC Package Contents: 1 x retractable fan 1 x data cable