Datasheet:

Material: cloth 
Color: black, red, blue, grey
 Capacity: 64MB to 4GB-1.1/2.0 vers

 
  IBM PC / AT or compatible Desktop or Notebook or Mac computer with USB port
  USB interface, driveless, hot plug&play,
  Small, light, shockproof and moistureproof
  No driver is required (except Windows98)                                                                     

  Support flash ROM
  Read transfer: over 900KB/second, Write transfer: 600KB/second for 1.1ver,2.0ver is     higher 10 times than 1.1ver
  Large capacities: 64MB to 2GB
  Small, light
   LED indicator when the Pen Drive is in use
  No external power is required, powered by USB bus
  Durable solid-state storage, more than 10 years data retention