The Roshopi Portable Waist Fan K50 is a versatile and powerful fan that can be used both indoors and outdoors. With a capacity of 10000mAh, it provides long-lasting power and convenience. The fan features 5 different speeds, a touch control style, and an LED light for added functionality. The compact rectangle shape and clip-on mounting make it easy to carry and use on the go. This fan is a great addition to any room and a practical choice for those looking for a portable ventilation solution.