Speed:
The speed is good for a normal USB 2.0 flash drive. Faster USB 2.0 sticks of course there are. This use memory modules and are usually much more expensive. The price / performance ratio was right here in any case.
Both 32GB sticks I have read 24MB / s and 11MB / s write measured. The 64GB drive is read with 21MB / sec and 8MB / s write a little slower.
Filesystem:
Unlike the 32GB sticks the 64er can not be formatted with standard Windows tools in FAT 32. Here you should or buying check if the devices which you want to use with the 64GB drive NTFS or FAT 32 support. With tools such as FAT32 Formatter but can also store up to 2TB large stick in FAT 32 formatted.
Housing:
The housing of the stick looks better in the flesh as if in the photos. He has a good size. Through the sliding mechanism can protect the terminal well, without fiddling with rum caps the go eventually lost. I personally find this mechanism as the best I've had in a USB flash drive to date. Since the connection is only retracted and not closures, this method is of course only suitable for indoor use at normal house dust. A status LED does not exist.
Conclusion:
My next Stick is certainly a USB 3.0. Who does not need the USB 3.0 speed or using equipment that gets support only USB 2.0 anyway here a fast, cheap and reliable in my experience USB stick. BUY!