I never in my life thought I'd be saying "wow" over a fan purchase, but here I am!
This thing hits the mark on all tests. I take it portable with me to stay out late in the backyard and keep the mosquitos away, or keep cool at night while sleeping. 
I have no idea where it is finding the cold air to move around on a hot day, but it does.

Hands down the best fan I've ever purchased. Expectations exceeded.