BEFORE PLACING YOUR ORDER CONTACT US SO WE CAN CONFIRM AVAILABILITY AND OFFER YOU A DISCOUNT CODE. YOU MAY DO THIS VIA CHAT OR EMAIL [email protected] SEND US THE PRODUCT NAME AND WE WILL PROVIDE THE DISCOUNT CODE. WE PREFER CHAT TO GET RESPONSE. Our 4-speed cooling fan, with built-in 7,200mAh rechargeable battery, allows for about 5 hours for full-charged, ensuring working 3-24 hours. Come with USB output port, can be worked as an emergency power bank for your digital devices. Its adjustable height and 180° tilting angle give you a desired wind direction and height to be as a desk fan or floor fan for your personal need. It is easy to fold up for convenient storage and taking out for outdoor using. 30-45dB Low noise provides you a good cooling lunch break and sweet sleep at night.