Ergonomic design, easier to use, grasp Exclusive circular shape, can be perfectly fitted on a keychain Stylish and sturdy zinc alloy exterior Exquisite metallic design as a fashion accessory COB (Chip On Board) technology for water, dust and vibration proof protection Cap-less design, no more worries about cap loss Recurve File Recovery, allowing recovery of erased files, such as digital photos, documents, music and videos SP Widget, the exclusive free-download software, provides powerful functions such as data backup & restore, AES 256-bit encryption and cloud storage for efficient data management One year warranty