[20 Hours 4000mAh Battery]: The 1st level soft wind mode of the handheld fan can be used for 20 hours (without worrying about working or walking all day), and the 3 hours 199 levels strong wind mode allows you to cool down quickly (a must-have under the scorching sun). Meet your needs throughout the day! [1-199 Speeds & Rotary Switch]: The mini USB fan has 1-199 wind speeds, making it ideal for the beach, office, travel and other places. Innovative Shift Design: You can instantly change the wind speed by gently pressing the wheel: from soft wind at home to strong wind outdoors. [Lightweight, Portable & Summer Gift]: This small handheld table fan has a hanging rope, which is not easy to lose; its lightweight body can be easily put in a pocket or bag; it folds at 115° for easy use; its modern minimalist style is combined with low power consumption. You can use it safely and it is also a great summer gift! [TYPE-C & 3H Full Charge]: This rechargeable portable fan can be charged from