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Turn on the switch, activate the fan, and provide an output voltage of 4.5V.
Briefly press the air volume button to increase the intensity by one level each time. Briefly press the air volume decrease button to lower the intensity by one level each time. With a long press, the intensity decreases quickly.
In any state, double-pressing any button displays the current battery level, which disappears automatically after 3 seconds. When the battery is fully discharged (0%), you must turn the switch to the “OFF” position to start charging.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.