How to Compare GPS Models Before Purchasing One

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By eHow Contributing Writer

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(9 Ratings)

Your first task in buying a GPS system is to determine what features you need. Follow these steps to compare GPS models.

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Difficulty: Moderately Easy

Instructions

Step 1

Compare the map display and map functions. GPS navigation maps vary in detail. Some maps include details like elevation and street detail. Don’t overdo it and buy a GPS navigation device with map details you will rarely use.
Step 2

Decide what type of display you want, horizontal or vertical. Consider the number of pixels on your GPS system's screen -- that is, the degree of resolution. Screens are available in a variety of sizes. Choose the specifications that best fit your needs.
Step 3

Consider antennae voltage and battery life. Choose a model with a high antennae voltage for clearer reception. People who take long trips should consider buying a GPS navigation model with a long battery life.