Features: 1.No need to drive, plug and play, compatible with most USB devices, mobile phones/computers, etc. on the market, to avoid unrecognized at critical moments 2.Possess beauty and strength, carefully crafted metal texture and high?value appearance make people love it 3.Mini and small, come with a metal keychain, easy to carry with you and not easy to lose 4.Used with for Android adapter can expand mobile phone memory, convenient storage, direct reading and copying of files, photos, videos, etc. 5.The product is applicable with for Windows 98/Me/2000/XP / OS X 9.x / OS X / Linux2.4.x systems specification:Item Type: U Disk No driver required (for Windows98 and above) Applicable system for Windows 98/Me/2000/XP / OS X 9.x / OS X / Linux2.4.x Interface: USB2.0 Computer: For IBM PC/OS X PC or laptop, etc. Maximum Writing Speed: 4-10mb/s Maximum Reading Speed: 10-20mb/s Application: Backup files, videos, etc. Operation Steps: Plug and play The displayed capacity is different from the nominal capacity because the calculation method is different Manufacturer Standard: 1GB / 1000MB / 1MB = 1000KB Regarding Usable Capacity: Please Note the Memorandum Regarding Storage Product Capacity: 4GB=approximately 3.4GB-3.8GB 8GB=approximately 7.4GB-7.6GB 16GB=approximately 14.5GB-15.5GB 32GB=approximately 28GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 119GB-124GB 256GB=approximately 249GB-250GB 512GB=approximately 498GB-500GB PackageList: 1 x U Disk 1 x For Android Conversion Head 1 x Hanging Ring