Features: 1.USB3.0 Interface: USB3.0 interface, high speed data transfer, read and write speed higher than USB2.0, plug and play, no need to install any software. 2.Compatible System: USB flash drive is compatible with for Windows, for OS X and other operating systems, just connect the storage unit to the USB port on your computer or other devices with USB ports to work properly. 3.Large Storage Space: USB flash drive for backing up photos, recording videos, listening to music, providing power points for presentations or projects, backing up public files, movies, music, pictures, software, data, etc. 4.Waterproof: The metal case defend your drive from damage. It provides protection from dust, water, temperature and shock. 5.Lightweight and Portable: Mini design, you can put the USB flash drive in your pocket or any small space and enjoy data transfer and sharing anytime, anywhere. specification:Item Type: USB 3.0 U Disk Material: Metal Interface: USB3.0 Compatible: For Windows, for OS X Size: Approx. 6 x 17 x 67mm / 0.24 x 0.67 x 2.6in PackageList:1 x UDisk NoteAbout USB capacity. Due to different calculation methods, the memory capacity of a usb flash drive may show less on a PC. The larger the capacity, the greater the deviation. Storage industry area calculation method. 1GB=1000MB=1000x1000KB=1000x1000x1000B Operating system calculation method. 1GB=1024MB=1024x1024KB=1024x10024x1024B Therefore, the storage capacity of 1GB in the operating system is shown as: (1000^3)/(1024^3) 0.93GB 4GB=approx. 3.6GB to 3.8GB 8GB=approx. 7.4GB to 7.6GB 16GB=approx. 14GB to 15GB 32GB=approx. 28GB to 30GB 64GB=approx. 58GB to 60GB 128GB=approx. 110GB to 120GB