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GPS navigation devices can be costly if purchased through the auto dealer. After-market systems apply the latest technological advances and mapping programs to get you where you're going without a problem. And given the progress in technology nowadays, a portable GPS can be bought for a much lower charge than dealers apply when such a device comes with the car.

Many are not aware that portable GPS navigations can be used for a number of different purposes, and getting directions is just one. Most are upgradable to be used in conjunction with DVD and MP3 players as well as with Bluetooth capability. Even the after market units can be a great investment. These portable navigation systems that are available are easily installed with a suction cup attached to the windshield. They also use the battery of the car through the DC outlet. These devices are very versatile and can be easily transferred from one vehicle to another.

There are Garmin portable GPS systems available with built-in batteries to eliminate the need for an external power source. The popular and versatile Garmin Nuvi 350 GPS Navigator's rechargeable lithium-ion battery can last up to 8 hours. It is compact without sacrificing screen size unlike some of the other navigation systems that are available. Moreover, it is not just a navigation system. In addition to providing directions, it also serves as an Mp3 player and audio book player.

There is another type of navigation system called the in-dash. In-Dash Navigation units generally include a touch-screen monitor, which lets you enter destination addresses with your finger-tip. These systems can replace your factory radio, and provide control over your entire audio system.

With systems designed to fit both standard and big radios it is now possible to find a system for any vehicle. Options like Bluetooth, iPod integration, satellite radio and TV tuners let you to outfit your vehicle with all the options at a fraction of the cost that your dealership would charge you.

If you put as much information into the GPS system as possible, it will be easier to find your location. Some maps are on the hard drive of the system, and you can just download the updated ones and put them onto the hard drive as updates. There are also actual maps, which are on a DVD the system can read. So you will have to purchase the new DVD maps so that you can stay up-to-date on new roads.

There are take-along GPS systems that are available at all cost levels. For a little money, you can avoid getting lost in the future, as well as have the amusement and usefulness factor of a GPS.