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.

One more sort of GPS is referred as in-dash. It usually has a touch screen, allowing you manual entry of your destination information. Such a device can be installed in place of the radio that came with the car so that it is controlling the whole sound system.

No matter what you drive, there are units available to adapt to your radio model. There are all sorts of things available, such as mp3 adapters, satellite radio, television and cell phone options. You can have all of this, and pay way less than the car manufacturer's cost to integrate it into the car.

When you load more points of interest into your unit, you will have a better chance of finding your destination easily. Already loaded onto your unit are hard drive maps. These can be easily updated by downloading new ones from your home system and using your SD Card or DVD to load them onto your hard drive. You insert the DVD, on which actual maps are located, into the system. To stay current with the changes in your area, you can purchase new updated DVDs in the future.

Now portable navigation systems are affordable no matter what your budget. It's a small price to pay for all the functionality and entertainment and the satisfaction of knowing that you will never again have to pull over and ask for directions.

Portable GPS navigation in your vehicle is relatively inexpensive especially when compared to the overpriced dealership charge that comes with a factory navigation system. After market units use the most current technology and maps to get you where you want to go. Some Garmin portable GPS units have built-in batteries that allow you to navigate without needing an external power source. It is small enough to fit in a purse or a pocket, yet it has a good sized screen. The Garmin Nuvi 350 Personal Travel Assistant gives you more than just directions. Its features include an Mp3 player and an audio book player!