4GB Silicon Bracelets USB 2.0 Flash Disk(Black)

1) U disk capacity: 4GB 2) Transfer speed: Full-speed (12Mbps) transmission (actual speed and computer configuration) 3) U disk interface type: USB 2.0 4) Storage media: flash memory 5) Operating System: General 6) Super quality and high performance 7) USB stable a grade flash chips 8) Color: as picture 9) Length: 21cm 10) No driver installation needed