SanDisk Ultra Dual Drive USB Type-C USB flash drive 128 GB USB Type-A / USB Type-C 3.2 Gen 1 (3.1 Gen 1) Black Silver High-speed USB 3.1 performance in a USB Type-C Drive Easily free up space on your smartphone or quickly transfer files between devices at USB 3.1 speeds. Easily move files between your phone, tablet, and computer with this SanDisk dual memory stick. With 128 GB of storage, it's plenty for all your photos, films, and documents. Enjoy speeds of up to 150 MB/s, so you won't have to wait around for your data to load. Download the Memory Zone app to view, access, and back up files from your phone.