The information in the article below comes straight from well-informed experts with special knowledge about Car Gps Navigation Reviews. Sometimes the most important aspects of a subject are not immediately obvious. Keep reading to get the complete picture.

Are you wondering whether you should spend your money on a car GPS system that is built right into the dashboard of your car instead of a portable device that sticks to you dashboard? Well you're in the right place to determine not only what the benefits are of purchasing a built-in unit, but also which ones are most popular on the market today. The answer differs depending on the consumer's needs, so let's go over some pros and cons that you might want to consider when thinking about purchasing either one.
A typical GPS device contains:
    * 12-channel receiver - the quality of the receiver determines how long it takes the device to acquire a 3D fix.
    * Antenna to capture satellite signals - positioned to get a clear view of the sky.
    * CPU to process the data and overlay on maps
    * DVD Hard-drive - where maps on DVD's or available online are uploaded and stored. Some cheaper units do not upload the maps, but reference them off the DVD or CD.
    * Display Screen - mostly color with handheld units using black and white
    * Voice Interface - more advanced units



Although there are a number of different GPS manufacturers, I would stick with the top three, in the United States, that is. The top companies in the U. S. are Garmin, Tom Tom, and Magellan. Together they represent about 90% of the U. S. market. All three of these companies make great products, although if you're looking for a state of the art, cutting edge device (and if you're willing to pay for it), then Garmin is the only company you need to consider. There are many GPS navigation brands out there. Each manufacturer possess unique characteristics and features that are usually not found in other brands. There are strengths and weaknesses to each, and each brand may appeal to some consumers than others.

The downside of onboard GPS Navigation units are susceptible to theft; and you cannot take them with you to use in other vehicles or when travelling abroad. Portable units, such as the Garmin StreetPilot 2720, can be used in multiple cars; being easily moved from car to car. Depending upon the power supply and portability, portable and handheld units can be taken when travelling or used on cycles, boats, private aircraft etc.

This article's coverage of the information is as complete as it can be today. But you should always leave open the possibility that future research could uncover new facts.