Review on Portable And Powerful: BRIGENIUS Clip-On Fan For Strollers, Desks, And Travel - USB Rechargeable And Battery Operated In Sleek Black by Bob Kussmaul

When I bought this, I thought for sure I'd need to buy more within a couple months. I've used this fan almost every day at work (I work in a quiet/cubicle/office environment and it is very subtle), taken it on camping trips where we had limited electricity and on a recent cruise vacation to supplement some white noise and air movement to help us sleep in an otherwise stuffy room. Full charge on the highest speed (which is still pretty quiet) lasts 3-4 hours unplugged. Works endlessly plugged in. Highly recommended!