Harman/Becker Automotive Systems, a division of Harman International Industries has introduced a portable navigation device, the Traffic Assist Highspeed 7934, which will be available exclusively at Office Depot retail stores. Based on a 400 MHz processor, the device has a 3.5-inch touch-screen color display, maps of the United States., Canada and Puerto Rico, an MP3/WMA player, and two speakers. The device displays legal speed limits and a voice signal warns the driver when those limits are exceeded.