THE FLASH DRIVE FOR USB TYPE-C DEVICES Designed specifically for next-generation devices with the new USB Type-C port. The reversible connector has a symmetric design, so that it's always right-side up, making it easy and fast to plug in. HIGH-SPEED USB 3.1 High-speed USB 3.1 performance of up to 150MB/s means you spend less time waiting to transfer your photos, videos, songs, and other files between devices. DUAL USB TYPE-C AND USB TYPE-A CONNECTORS With dual connectors, the SanDisk Ultra Dual Drive USB Type-C lets you free up space on your smartphone or tablet, or transfer files between multiple devices, whether it has a USB Type-C port or the traditional USB Type-A port. SANDISK MEMORY ZONE APP FOR EASY FILE MANAGEMENT Available from the Google Play store, the SanDisk Memory Zone app lets you view, access, and back up all the files from your phone\'s memory in one location. It can also automatically move files from your device to your drive to free up space. About Capacity: 100% Real capacity 16GB=approximately 14GB-15GB 32GB=approximately 28GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 115GB-120GB Flash memory vendors are using decimal arithmetic: 1G = 1000MB=1000*1000KB=1000*1000*1000B calculated and the operating system using binary arithmetic: 1GB = 1024MB=1024*1024KB=1024*1024*1024B For example 1GB U disk capacity display: 1GB=(1000*1000*1000) / (1024*1024*1024) So there are some differences between display capacity and nominal capacity of flash memory products If you don\'t know much about capacity, please Google U Disk capacity\' to get more information. Thank you for your kindly understand Package 1*usb flash drive