Silicon Power 128GB Blaze B21 Retractable Capless USB 3.1 Gen 1/ USB 3.0 Flash Drive for Windows/Mac - Black (SP128GBUF3B21V1K) USB Specification: USB 3.1 Gen1 / USB 3.0, USB 2.0 compatible Color: Black Dimensions: 9.60mm x 19.50mm 58.00mm Weight: 8.93g