Very fast USB 3.0. Its 64GB gives comfort to store its data. It can be formatted as FAT or NTFS. Although it is large enough (7cm long), it is nevertheless not very bulky. During the flash deals from amazon, this key is a price that must not be missed. The safe software provided in the key used to encrypt confidential data easily with a password to be defined according to its rules. The software still remains perfectible (bad searches encrypted files).