Features: 1.USB Port: This astronaut USB flash drive adopts USB port which can be connected to the computer, no additional power supply is required. 2.Stable Performance: This astronaut USB flash drive adopts stable technology which adheres to the USB 2.0 standard. 3.Hot Swap: This astronaut USB flash drive supports hot swap and plug and play function, providing more convenience. 4.Anti Interference: This astronaut USB flash drive is shock proof, moistureproof and anti electromagnetic interference, no mechanical component. 5.Ideal Gift: This lovely astronaut USB flash drive with unique design is an ideal and perfect gift for students, teachers, friends and family. specification:Item Type: USB Flash Drive Material: Silicone Strong Compatibility: No Driver is Required. Suitable for Win 98, for Win ME, for Win 2000, for Win XP, for OS 9.X, for OS X, for Linux 2.4.X Interface: USB2.0 Computer: For IBM PC, for OS X or Laptop, Etc. Speed: Maximum Write Speed 20mb/s, Maximum Read Speed 40mb/s Application: Backup Files, Videos, Etc. Capacity: 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 = about 3.4GB-3.8GB 8GB=approximately 7.4GB-7.6GB 16GB=approximately 14.5GB-15.5GB 32GB=about 28GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 114GB-124GB 256GB=approximately 249GB-250GB 512GB=approximately 498GB-500GB PackageList:1 x USB Flash Drive