This is a great little fan.  Forget the large number of batteries needed because it comes with the recharging cord and a charge will last over 3 hours on high speed.  It blows a good amount of air for such a small, compact, lightweight (without the batteries) fan and it's quiet.  We bought it to be used at a hotel in the Caribbean that has an open air (non air conditioned) dining room and it worked great.  In fact it was a life saver on our trip.  I just ordered a second one because while it blows a lot of air, it has to be directed right at you to be effective.  We thought we could both get the breeze from one fan, but that didn't work very well.  We each needed one.