3 Speed AdjustableThe touch-sensitive button is located on the top of the USB desk fan, which can be used to adjust the fan speed. The powerful desktop fan has 3 modes, breeze, medium wind and strong wind. Press and hold for 2 seconds to power off. Use low speed for sleep and work and high speed for exercise. 360 Cooling & StableThe head of the USB desk fan can be rotated 360, and the upgraded larger and flatter base has 4 non-slip silicone pads to make the desk fan more stable. USB & Battery OperatedWe provide a USB cable for the bedroom fan to make sure you can easily connect it to the power supply. For safe transport and use, the quiet and powerful USB fan comes without batteries and comes with an extended USB cable to connect to a computer, power bank or adapter. There is a battery compartment reserved for the desk fan, and you can purchase batteries yourself when needed. Silent Cooling FanSilent USB desktop fan is not only powerful but also quiet, perfect for bedroom use and baby sleeping. Turn the mini table fan to low speed (1 gear), almost no noise (<20db), the soft wind helps to cool down and fall asleep easily. The same situation also applies to study and office. Strong AirflowThe cooling desk fan is suitable for different scenarios. The high-speed fan can generate strong airflow in hot summer.