Shintaro's High Speed Rotary Pocket Disk gives you convenient and reliable data storage while providing file storage and simple transfer | USB specification revision 2.0 compliant | Hot Plug and Play | ReadyBoost compatible | Security function via download | Shock resistance: 1000g max | No external power is required | Supports Windows and Mac OS | Dimension 59 x 19 x 13.8mm (LxWxH) | Weight: 15g | Pack of 3 | OEM: 08SHR4GB-3PK