With its compact size and its moderate and sufficient transfer speed it fits my needs. As transfer Stick to dub large video files or the like, I'd rather fall back on a USB 3.0 flash drive. The size is there but unfortunately little or no alternatives.
Measurement with Blackmagic returned the following transmission speeds:
4.7 MB / s write
17.4 MB / s read.
So far, he holds by and has no defects.
I use it on Mac OS X (FAT32 formatted) and had no problems.
Let's hope it stays that way.
From me there are 5 star.