Review on Wulisan Portable Stroller Flexible Traveling Heating, Cooling & Air Quality by Karen Washington

3000mAh BATTERY POWER & POWER SUPPLY Long battery life, Steady speed 10-12 hours, Cooling speed 7-9 hours, Powerful speed 5-6 hours, Sleep mode 18-20 hours . It has a USB port and a TYPE-C port for charging. The portable fan is powered by USB or battery. It can be charged by a computer, laptop, power bank, car charger, etc. and works while charging. Another feature is an external battery, especially when your phone or laptop is off, this is your emergency charging port.