There is tiny hole for a key chain that is unlikely to work with most key chains.
It is fast; I ran a test to see how fast; I have always considered my 1.5 year old, 8 GB HP USB drive to be reasonably fast; I wrote 2.79 GB worth of MP3 files to it in 5:51, or 7.9 MBps.
The write speed is advertised as 18 MBps; but I only achieved 10.3 MBps