From a size point, the drives are 59mm x 18mm x 9.2mm, so not much bigger than an AAA battery and lot smaller than an external 2.5" drive; and in the case of the 16GB, it almost matches the 2.5"'s 18GB for capacity. Provision for attaching a keyring or carrying strap is made on the one end, but no keyring or strap is provided with the drive. Also, the end cap is designed to pull off and be slipped onto the other end, the end you would attach a keyring or strap.



Link: Viper's Lair