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Advantages and disadvantages of handheld GPS

Advantages and disadvantages of handheld GPS

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I have a Magellan 500 and PDA-PGS, should be eligible to speak:Magellan 500:Advantages: strong signal, low drift, waterproof, shockproof, long battery life, you can use the ordinary battery 7, color screen, still can be seen under bright light......Disadvantages: the function is relatively simple, the map is not as rich as PDA-GPS resources, homemade map is difficult......
If only for outdoor sports, Yamano Ryoyuki is still a relatively good machine, if it is self driving navigation, choose another bar...
The price is more expensive, the map shows too professional, most people seem to be more difficult, suitable for outdoor enthusiasts, such as mountaineering expedition, the advantages of long life, good reliability, simple three

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