Foldable Telescopic Rechargeable Fan Cooler with Humidification Phone Holder Features: 4 Speed,easy to turn down or turn up speed according to what you want. Easy to operate,you can enjoy cool wind Low Noise,It can be used when you are studying,sleeping,or doing other such activities that require . High-capacity 18650 lithium battery,it can work 4-10 hours a full charge. Power cord can be used,No power cord required,Simulating natural wind,intelligent control,frequency conversion. Product Description: Main Material:aluminum ABS plastic silicon steel sheet (motor) PP (fan blade) Cell model:lithium battery 18650 Core capacity:3.7V 7200mah Product size:closed state 19.7x19.7x12cm expanded state:19.7x19.7x90cm Wind speed gear:3 2 1 Power line length:1.5meter Control mode:button type Wind mode:1st gear:soft wind,2nd gear:fresh wind,3rd gear:strong wind,4th gear:natural wind Working hours:6-20hours Water tank capacity:285mL (work 11hours) Package Includes: 1 x Fan 1 x Data Cable Speed,easy to turn down or turn up speed according to what you want. Easy to operate, you can enjoy cool wind Low Noise, It can be used when you are studying, sleeping, or doing other such activities that require . High-capacity 18650 lithium battery,it can work 4-10 hours a full charge. Power cord can be used, No power cord required, Simulating natural wind, intelligent control, frequency conversion.