1: Adopt USB 2.0 port and support plug and play 2: No need for external power supply (with LED indication light) 3: Storage capacity: 32MB, 64MB, 128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB 4: Compatible with the operation systems of Windows 98 / SE / ME / 2000 / XP / Vista, Mac OS 8.6 and above, UNIX, and Linux 2.4 or above (installationing program for Windows98 is needed) 5: Electronic memory media, without mechanical parts 6: Shaking and electromagnetic interfering resistant 7: Support software encryption, with USB HDD / ZIP DOS starting functions 8: Secure data storage for a long time: More than 10 years 9: High speed of data reading and writing: USB 2.0 port: 10~12 Mbps of writing speed, 18-25Mbps of reading speed 10: Portable and easy to carry 11: All colors available 5dollars/pcs Minimum batch: 50. Material: plastic (ABS) Size: 86*54*3mm Weight: 22g