The Hitachi TravelStar 5K120 is a 2.5-inch, 5400 RPM hard drive based on proven technology. The TravelStar 5K120 improves on the already best-of-breed low-power consumption of its predecessor while delivering improved performance. Hitachi has also implemented iridium-manganese-chromium heads (IrMnCr) for improved reliability. Travelstar 5K120 delivers the critical attributes to address mobile computing needs of the most demanding users.