I advise, after comparing several USB key for a good thirty minutes, I decided on this one, so of course it is not perfect, especially the writing speed may be lacking (in 50Mbps Ideally, sometimes less, it puts a lot of time especially spite Windows says there are only five seconds, bah it puts 2 minutes at the end of the file copy). But I have not tested the USB 3.0 transfer with large files, so I give no opinion on that.
Apart from that, it works very well, it is very small !!! I expected more still view the images in the presentation, but it is really tiny.
I probably repeat a second later if it takes time ... The concern of the metal with which removes, in my personal is slightly visible for the moment but it does not bother me the sense that the key is inserted frequently, so we do not see it ... And I will not do for me so little as the key does its job.
BRIEF! I advise! Amazon still on top as usual, no need to specify it.