The battery capacity of the product will be  compact and portable, suitable for outdoor travel and storage. In addition, this mini fan can also be adjusted in multiple angles, allowing you to aim the cold air in any direction. This portable USB folding fan supports wireless use, and the rechargeable battery can be used for 2-4 hours depending on the wind speed. There are multiple charging methods so that you don’t have to worry about not finding the socket to charge when the battery is out of power, just take the mobile power bank with you. In addition, you can also charge via computers, laptops, car chargers, etc. This smart fan has 3 speeds and a 3000mAh rechargeable battery, allowing you to enjoy the hot summer in different scenarios, capturing, cooking, working, camping and barbecue without worrying about the risk of power failure.The folding fan has a built-in optimized smart chip that can provide charge and discharge protection, over-temperature protection, etc., while ensuring battery life, it can also prevent short-circuit and other safety issues. If you have any problems with our rechargeable fan, please contact us, and we will give you a satisfactory answer.