A quick guide to GPS receivers

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Standalone GPS receiver
Standalone GPS receivers come in a variety of shapes and sizes to suit different budgets from the basic monochrome screen ones to full-colour handheld and car navigation systems.

There are quite a number of manufacturers in the market, but the more well-known ones are Magellan and Garmin, and they produce a bewildering array of standalone receivers, even down to wristwatch-sized ones specifically meant to monitor activities like jogging and cycling.