High Quality Content by WIKIPEDIA articles! A GPS navigation device is any device that receives Global Positioning System (GPS) signals for the purpose of determining the present location. These devices are used in military, aviation, marine and consumer product applications. Dedicated devices have various degrees of mobility. "Hand-held" or "outdoor" or "sport" receivers have replaceable batteries that can run them for several hours, making them suitable for hiking, bicycle touring and other activities far from an electric power source. Their screens are small, and some do not show color, in part to save power. Cases are rugged and some are water resistant.

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