• The Magellan Maestro 4250, a global positioning system (GPS) primarily intended for use in your vehicle, uses satellite signals to determine your precise location and overlays that information on NAVTEQ maps to provide you with a complete navigation tool. The 4250 can be mounted to either your windshield or dashboard, but it should be placed in a position that is easily reached yet does not block the driver's view.
  
  

The Physical Unit

• The Magellan Maestro 4250 is 3.2 inches wide, 4.8 inches in height, 0.7 inches thick and weighs a mere 6.8 ounces. The only button on the unit is the power button located on the top edge of the unit. On the right side of the case is a SD card slot, a USB port and an FM antenna input. The bottom edge sports a reset hole. Speakers and an external antenna jack can be located on the back of the 4250 GPS unit.
  
  

The Screen and GPS Chipset

• A 4.3-inch touch screen is used to control the features of the Magellan. The screen is a color display with a 480 x 272 pixel resolution and 64,000 colors. The Maestro 4250 uses a SiRFStarIII GPS chip.
  
  

Voice Commands

• After your route is calculated, the Maestro 4250 provides step-by-step driving direction including voice prompts and actual street names. You can also give the 4250 spoken commands, enabling you to interact with your GPS unit hands-free while driving. The voice commands cover the most frequently used features, but you can not do all things, such as inputting an address, vocally.
  
  

Points of Interest

• Like the majority of Magellan GPS vehicle units, the Maestro 4250 comes preloaded with six million points of interest so you can search for restaurants, gas stations, ATMs, hotels, entertainment and other businesses either by name, location or proximity to you. It also comes with a AAA guidebook that includes ratings, attractions, discounts and roadside assistance.