This fan probably seemed like a good idea on paper. I was even curious enough to buy one. But it's just not practical. It loads fairly quickly and blows decently. However, it's too bulky and heavy to wear on your belt for long periods of time, especially if you move around a lot. The plastic clips aren't strong or flexible enough to accommodate different belt thicknesses, and the wind isn't strong enough to cool you down when you really work up a sweat. I easily carry my phone on a belt clip every day, but this fan is much chunkier and just awkward to use. Nice concept, but impractical.