❃❃📍📍 【NOTE BEFORE USE】Please open the battery cover and take out the insulator before using the fan, or the fan can't work. Please note: The charging time must be within 4 hours. Remember not to charge too long. The adapter and the cable for charing the fan need to meet the standard of 5V/0.5A. Please use the FAN in accordance with these standard. If you do not operate in accordance with these standard, shall be liable for the loss by customers themselves.