When looking for a good GPS, it is easy to get overwhelmed when comparing the many features that are available. First, decide what you will be using the GPS for. If it will just be for use in your car then you would not need some of the features that would appeal to hikers, boaters, or pilots. Some of the extra features will require that you pay an extra monthly fee, while the basic GPS satellite system is free to use. All you need is a GPS receiver unit and some batteries and you are good to go.

Screen

One of the most important features on a GPS is the screen. Look for a screen that is easy to read and features high contrast color LCDs. A transflective screen is easier to view in the bright sun. If the model you choose does not feature a transflective screen, you could consider adding a screen hood to the unit.

Dashboard Mount

If you will be using the GPS unit in your car or boat, you will want to look for a package that includes an easy to install dashboard mount.

Touch-screen Navigation

Touch screen navigation is a great feature that makes navigation as simple as tapping the screen instead of pressing buttons.

Voice Prompts

The quality of the audio is important. Look for clear audio quality with sufficient volume control. You must be able to hear the directions even if you are driving at higher speeds, people are talking, or you are listening to the radio. Some units have very powerful speakers built in while others feature a FM transmitter that broadcasts the directions through your car radio.

Routes

A very handy feature is the ability to load and recall previously used routes. This feature will also store all of the waypoints along the way as well as reverse directions.

Trip Computer

A trip computer will display useful data such as trip distance, odometer reading, average speed, current speed, trip distance, and trip timer.

Alarms

Units are available that will alert you if you are off course, upcoming approach and arrival, and upcoming waypoints. In the event you are using the GPS unit in your boat, you will be warned of shallow water and obstructions.

Basemap Units

Look for receivers that include current, built-in mapping software. Good software should include major highways, cities, rivers, lake, and airports. An important feature is the ability to easily download updated and more detailed mapping data as it becomes available. You will likely have to purchase the additional software, but the ability to access the location of gas stations, banks, restaurants and off road trails is valuable. You want a system that allows you to upgrade the maps so you can always access new roads or developments.

Start-Up Time

Shop for a unit that features a fast start-up time. A satellite that connects to 32 satellites will start up quicker than one that connects to 12.

Technology

Any system you consider should include the Sirf III chip. This is the latest technology and will locate satellites quickly. Models that do not include this should be avoided.

Portability

The ability to remove the GPS unit from your car is important if you plan to do any hiking, backpacking, or hunting.

Extra Features

While extra features will not affect the ability to access directions and locations, they can be a lot of fun. There are some systems that allow you to play XM radio, DVD's, MP3s and videos.

Danny Short has a passion for electronics and outdoor activities. He enjoys driving, boating, biking, and travelling to different places. He recently opened a website http://www.outfitgadget.com that sells the latest GPS and other outdoor gadgets. Outdoor enthusiasts can also blog about their outdoor adventures and experiences.

Article Source: http://EzineArticles.com/?expert=Dan_Short