After using this fan for a couple of weeks on my desk I noticed that speeds up and slows down on its own without me touching it. It seems to have a mind of its own. It is not a total deal breaker because the difference between the two speeds is not significant. What is worse that sometimes it is hard to stop or start.
This fan is pretty different from any other fan I own. Its strongest feature is that it is quiet. The air flow is reasonable for a very small fan, i.e. I can feel it if it is on a desk close by.
On the negative side, you cannot aim it. It works only one one position and any aiming is done by moving the fan, or putting something under it if you want to raise the angle. The on/off mechanism is touch based. For example, if you touch it to move it you will change the setting. The setting cycle one touch low flow, next touch high flow, next touch off, next touch low flow. The fan only can be controlled when it is in one position (resting on the leather-like strap). If you hang it by the strap (rather than rest on the strap), then you cannot change the air flow. Hanging is really not a very practical option because it does not hang or blow straight down. The fan hangs on an angle so you need a configuration where you want air from above on an angle. Someone might find it useful, but it is not very general purpose.
The fan's size is slightly under 4" x 5" (measuring the fan's cage). The USB cord is built-in (i.e. cannot be removed and swapped for a longer one) and is 40" long. Overall - too many short comings, I am not a fan of this fan.
You can find it on Amazon by following this link.
Ali Julia review ★★☆☆☆