4GB Black Bracelet Leather USB 2.0 Flash Memory Drive 100% Brand new and high quality. Package Contents: 1 x USB Flash Drive. Nterface: USB 2.0; Capacity: 4GB. USB 2.0 Compatible (Backwards compatible to USB 1.1) Compatible with Windows 7, Windows XP, Windows Vista, Mac OS 10+ and Linux; Hi-Speed USB 2.0 port required for high speed transfer.