Product Description: 1)promotion gift ,bracelet flash disk,promotional gift 2) Capacity: 128MB/256MB/512MB 3) USB 2.0 interface 4) Hynix flash chip 5) LED indicates the state of the drive 6) Shock-proof and moisture-proof 7) High speed to read at 16MB/s, write at 8MB/s. 8) Hot plug and play 9) Operating system: Windows98/NT/ME/2000/XP or higher (driverless above Win98)