Very tiny. Surprisingly fast. Run hot. Difficult insertion/removal.
By Steven on 11/30/2011
These are for mp3 files in my truck. The tiny size is perfect for the location of the USB port on the dash, where larger drives would be far more damage-prone. I bought three, all of which work okay so far. They come formatted in FAT32 without any crapware included. Write speed for larger sequential files (3MB and larger mp3s) comes in around 6MB/sec, which for something this small seems pretty good to me. Read speed is about 13MB/sec, which again, seems pretty good, considering.
Two other comments: They run HOT. They probably consume no more power than any other typical USB flash drive, but their small size doesn't make for good heat transfer out of the device. The heat doesn't seem to affect their performance, but we'll have to wait for next summer to see what happens in a hot vehicle.
Also, high insertion/removal force: the substrate that mates with the USB receptacle appears to be thicker than other typical USB connectors. These three measure 2.22mm from the plane of electrical connector to the outside of the shell, where typical USB devices appear to be a little less, ranging from 2.00mm to 2.05mm according to my unscientific survey. This would explain why these are rather difficult to insert and remove. In one device, I had to resort to pliers to get the flash drive out. This isn't such a good situation, but then, they do advertise these as "store and stay", IOW, they're apparently not recommended for portability.