Enjoy a full-color touch screen, intuitive button layout and an ergonomic design. So easy to use, the whole family will love it. Ergonomic design - Fits comfortably in your hand Rechargeable design - Eliminates the worry about replacing batteries World's largest A/V control database - Be confident your Harmony remote can control virtually any home-entertainment device you have today or buy tomorrow System Requirements - Windows 2000, Windows XP, Windows Vista, USB port, CD-ROM drive, Internet access, Macintosh OS X 10.3 or later