This all depends on which models you are comparing. Depending on the model types will determine whether or not a Pioneer Portable GPS is more or less expensive than the Magellan GPS.
The Pioneer Portable GPS is a navigation system that uses a satellite signal to pinpoint your location and give you directions to any given place that you enter on the system. The device includes power and speaker wires as well as a carrying case. Amazon.com sells this product too. You can see the item at http://www.amazon.com/Pioneer-AVIC-S2-Portable-Navigation-Display/dp/B000PXNR1G.
You can purchase a Garmin GPS system in Dallas at your local Best Buy. Garmin is probably the most reliable brand out there. Best Buy
A Pioneer GPS is used for cars. The GPS is designed to be installed in the dashboard. Some features of this GPS include, multimedia playback, GPS tracking and radio.
A hand held GPS is certainly a portable electronic device.
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One of the newest forms of portable gps navigation is now found on a watch. A wristwatch which can be easily worn is the most convenient portable gps device.
No, the Tomtom portable GPS device is not made in the United States of America. As a matter of fact the Tomtom portable GPS device is make in China at the Shenzhen Vatop Technology Co.
The iphone does include portable GPS navigation, however, based on the screensize, you may find that a dedicated GPS system is better if you need to use it frequently.
Yes - it is.
The cheapest Garmin GPS is the Nuvi 205 3.5" Portable GPS. It is available at Walmart: http://www.walmart.com/ip/Garmin-nuvi-205-3.5-Portable-GPS-Black/13020913.
A GPS portable is most likely meant for use outside of the vehicle, such as on golf courses. A normal GPS is usually intended to be used only on the road, and will not work properly if it is used for other activities.