SanDisk Ultra USB Type-C Flash Drive 128GB is a premium quality storage accessory that is designed for smartphones, tablets and computers with USB Type-C. It is not like most USBs on the market that transfer data very slow. It is capable of transferring 150MB per second allowing you to transfer data quickly with ease. It also has a SanDisk Memory Zone app on the Google Play Store that enables you to view, access and back up all the files from your phone¡¬s memory in one location. It is a must have storage device.