This just arrived today, product does what you'd expect it to as a fan. This however will interfere with digital tv signals regardless of whether running on batteries or via USB. Surprised no other reviewers had mentioned this as is very noticeable, tried at range of 5 meters from tv to PC and still caused television signals to be affected; when fan was switched off, all was fine. Only buy if you plan to prevent and annoy anyone in your household from watching tv at the same time.
As the title of review suggests this is better than expected.
It's not too loud, doesn't interfere with any other equipment as older fans used to. It shifts a lot of air too, it's not adjustable though. You can't stray too far from the blades due to the way it shifts the air. If your upto a meter away it's a very good device. Works great plugged in th a Wii too. Well worth the asking price.