Features: 1.Using SMI\Innostro or Phison and other solutions, through multi-layer testing, USB3.0 high-speed interface, faster speed and more stable quality. 2.Plug and play, instantly expand the large capacity, easily solve the lack of memory. 3.Light weight, small size, does not take up extra space, convenient to carry with you when you go out. 4.Wide range of applications, compatible with TYPE?C interface phones, tablets, for MacBooks, computers, printers, etc. 5.The design is unique and cute, which can be used as a practical gift for family, friends and colleagues. specification:Item Type: U Disk Material: Zinc Alloy For Windows 98 / Me / 2000 / XP for OS X 9.x / for OS X and Linux2.4.x: Support USB2.0 Interface: Support For IBM PC / Macbook PC / Laptop, etc.: Support Maximum Write Speed 4-10mb/s, Maximum Read Speed 10-20mb/s: Support Backup Files, Videos, etc.: Support PackageList:1 xU Disk 1 xHanging Chain Note1. The displayed capacity is different from the nominal capacity because the calculation method is different 2. Manufacturer standard: 1GB = 1000MB / 1MB = 1000KB 3. Regarding usable capacity: Please note the memorandum regarding storage product capacity: 4GB = Approx. 3.4GB?3.8GB 8GB=approx. 7.4GB?7.6GB 16GB=approx. 14.5GB?15.5GB 32GB=Approx. 28GB?30GB 64GB=Approx. 58GB?60GB 128GB=Approx. 119GB?124GB 256GB=Approx. 249GB?250GB 512GB=Approx. 498GB?500GB