Flash flash memory products are usually shipped according to 1MB = 1000KB and 1G = 1000MB, but binary operations 1MB = 1024KB = 1024MB, 1T = 1024GB and 1T = 1024GB are used for operation. There is a certain difference between the display capacity and the standard capacity. These are the calculated differences between us and the PC manufacturers. 8GB = about 6GB ~ 7GB 16GB = approximately 14GB-15GB 32GB = approximately 28GB-30GB 64GB = approximately 58GB-60GB 128GB = approximately 110GB-120GB 256GB = approximately 230GB-240GB 512GB = approximately 460GB ~ 476.6GB 1TB = approximately 900GB ~ 950GB 2TB = approximately 1850GB ~ 1962GB 4TB = approximately 3300GB ~ 3950GB 8TB = approximately 7300GB ~ 7900GB 16TB = approximately 15200GB ~ 15700GB Specification: 1. Interface: Type-C USB3.1. 2. Net weight: 9g. 3. Size:69*19*5.5mm. 4. Capacity: 2TB/4TB/8TB/16TB. 5.Color:Silver. 6. Support system: Win98/ME/2000/XP/ Vista/win7 /win8/win10 Mac OS 9.X/Linux2.4 or above. OTG-Functional SmartPhone (Android system 5.5 ) . 7. Compatible with 96% Android devices in the market. 8. Package: 1* pen drive. Specifications: Features: 1. High speed and stable data transfer,designed for next-generation devices with the new USB Type-C port 2. Plug and Play,no external power supply required. 3. 2-in-1 design with a Type C port and USB 3.1 connector,easy for data transmission between Type C devices and computers. 4. Use A-class chip, be erased repeatedly for 100,0000 times 5. Solid State Storage,portable, ultra clear cap can protect the connector well. 6. Writing speed: 15m/s - 30m/s . The rate of performance depends on the different operation system available and various flash adopted,so the speed maybe different Package Included: 1*U disk