Supported OS:Windows XP / Vista / 7 / 8 / 8.1 / 10, Mac OS 10.3.x or later, Linux 2.6.x or later 360° swivel cap design Ergonomic design, easier to use and grasp Exquisite circular shape, perfectly fitted on a keychain Sturdy zinc alloy casing COB (Chip-on-board) technology for water, dust and vibration proof Exclusive free-download file management App-SP File Explorer Recuva File Recovery, allowing recovery of erased files, such as digital photos, documents, music and videos