If you have a two-frequency GPS receiver with an external antenna and you are on a hill with no trees, the accuracy of your position can be within a centimeter or less. (An area the size of a sugar cube, or less)
The Garmin Forerunner 405 GPS are an accurate brand of GPS and a good watch.
The GPS is incredibly accurate. The GPS uses Google Maps and MapQuest. If you are concerned about the GPS, download the Google Maps app to get turn by turn directions.
Most GPS units are accurate to within a few metres ( 10-20 ).
The military has gps technology accurate to approximately 1 millimeter. conventional gps units (like the one in your car) are accurate to about 15 feet.
It depends on the accuracy of your GPS. An accurate GPS can give you the exact coordinates of your location in the world. For the most part, the higher the cost of a GPS, the more accurate it is.
Yes, very accurate.
GPS on phones are very accurate. They work just as good as a regular car GPS because they both work off of a satelite that feeds them information.
I would not recommend buying a Polar GPS watch as an alternative to your typical GPS systems. While the Polar GPS is accurate for runners it is not accurate enough for a vehicle.
Yes, vehicle tracking systems are reliant on GPS.
GPS technology has progressed a lot in the last few years. You can rely on your GPS to provide your vehicle's accurate location, including your latitude/longitude coordinates.
It depends where and how often the device downloads the GPS information. Streets and roads are always changing, so the GPS device must download updates to be accurate.
A watch GPS is just as accurate as a regular dash mounted automotive GPS. They have been able to consolidate the same technology into very small packages, so there is no loss of accuracy.