Review on Cool On The Go! Personal Clip On Fan with LED Lights - Stay Cool Anywhere, Anytime - USB Powered Fan for Ultimate Comfort - Hands-Free Fan for Strollers, Tables, Travel, and More - Blue/White by Brian Cox

Cool idea (in many ways) but slightly flawed execution. The battery compartment is too narrow, making it very difficult to insert the batteries correctly. I just couldn't get the Eneloops set to work, but I finally managed to get the smaller battery set installed properly. It also runs directly from USB, which seems odd for a portable fan but can be useful if you're working at a desk without air conditioning. Once you earn it's pretty good. It moves a lot of air at high speed, but it's pretty noisy. At a lower speed, it is quieter than most portable fans. And on a peak you'll look ridiculous, but it'll keep you comfortably cool without straining your hands.