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.

The Garmin portable GPS systems even use rechargeable batteries, so they are portable and you do not have to worry about finding an outlet to use them. They are rechargeable; some models can go for eight hours without having to be recharged. The screens are easy to see and read, but they aren't huge, so they can fit into your travel bag or tote. Others offer other features, such as an iPod player and other audio features.

Also, you can use a GPS system called the in-dash. This system has an interactive monitor, where you can type in the address to get directions. This unit fits where your car radio goes and replaces it.

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.

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.