Datasheet:

    Material: Aluminium Alloy Housing
    Size: 33(dia) x 50 (high)*4 (thickness) mm
    Color: black with silver
    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
  Write / delete protection switch
  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