Features: 1.USB Interface: Connect to the computer through the USB interface, no additional power supply is required. 2.Ultra Stable Technology: Compliant with USB2.0 standard; support hot swap, plug and play. 3.Electronic Storage Medium: No mechanical parts, shock proof, moisture proof, anti electromagnetic interference. 4.Rugged and Durable: The USB flash drive is dust and impact resistant, durable and safe to protect your file data. 5.Applicability: USB plugs fit a variety of devices (PC, Laptop, TV, Car etc.) and support multiple systems.specification:Item Type: USB Flash Drive Product Material: PVC Driver: No Driver Required (Above for Windows98) Support: for Windows 98 Me 2000 for XP for OS 9.X for OS X for Linux2.4.X Interface: USB2.0 Computer: IBM PC, PC, Laptop Etc Speed: Maximum Write Speed 10-20mb/s, Maximum Read Speed 4-10mb/s Application: Backup Files, Videos, Etc. 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-500GBPackageList:1 x USB Flash Drive