Desk Fan Portable USB Fan 90° Adjustable Cooling Fan Mute 4 Speed Adjustment Ultra Quiet Suitable For Home Desk Office

speed adjustment

1 Short press the button on the back of the fan to adjust the lowmediumhigh wind speed 2 Long press the button to enter the super wind speed 4th gear 3 The best output working current of the 4th gear of super strong wind is 2A current otherwise the wind is very small and the wind speed is even lower than the low gear It is recommended to open the 4th gear to use the adapter