Portable USB charging folding retractable floor fan mini summer mute mute student desktop desk fan office bedroom school dormitoryFeatures:1. Unique telescopic folding design, easy to carry. It can be folded and unfolded as a desktop fan, and can be extended by 100cm as a vertical fan.2. One-piece, expandable and foldable multi-function mini fan. It can work for 5 to 20 hours on a single charge. Work quietly without interference when working, studying or sleeping. You can adjust 4 levels of wind speed.3. The supplied cable can be easily powered through the USB port on a PC, laptop, mobile power bank or USB AC adapter.4. Very suitable for home, office and outdoor use.Specification:Product size: 19.7*19.7*9.3cm (folded)After shrinking: 36cmStanding: 100cmWorking time: 5-24 hoursCharging time: 4-5 hoursNoise decibel: 30-40dBDischarge power: 1.3-4.8WCharging voltage: DC5V/2AWorking wind speed: 2.3-4.0m/sThere are two kinds of batteries: 3600mAhColor: white, pinkNote:Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown on the picture. ThanksDue to manual measurement, please allow a measurement deviation of 1-3 cm.