No, not all GPS systems are universal, so make sure to research the model you're looking to buy and see that it is universal and compatible with where you are wanting to travel.
No, not all GPS systems have voice capabilities. Some GPS devices display directions and information visually on a screen without any spoken instructions.
Some GPS accessories that can be purchased for all GPS systems are cases, covers, window mounts, cupholder mounts and beanie mounts. They also have replacement chargers that can be purchased, however, these may be more specific to certain types of connectors.
They are one in the same. All GPS's are navigation systems, but not all nav systems are GPS's.
PCMag.com is one of the best and quickest ways to get reviews on GPS navigation systems. You can read reviews on different GPS systems all in one place.
A unversal gps does exist on a mount for gps systems. It however is difficult to find such gps systems that do exist for mounts.http://www.ask.com/web?q=universal%20gps%20mount&askid=fe64eb5e-ee59-49d3-9133-e5397efaa4b9-0-us_gsb&qsrc=999&o=1977&l=dir
GPS systems are updated daily by sattelites, you can find your fastest GPS systems by reading all of their specs before purchasing
Walmart does sell gps systems. They can be found in the electronics system with all the other gps systems. Or they can be found in the clearance aisle sometimes.
to find the answer to your question: How are TomTom Rider GPS systems different from regular GPS systems? please see the following website to learn more: www.tomtom.com/
Almost all dog GPS systems do include a collar, although replacement pieces for sets can be purchased individually. http://www.gpsdogcollartracking.com/
Alpine Electronics of America Systems make the GPS systems for Chrysler.
There are good and inexpensive GPS systems for trucks. These GPS systems for trucks include Garmin Nuvi 465t 4.3" GPS Truck Navigator and IntelliRoute TND Truck GPS.
You can find the difference between marine gps systems and garmin gps systems on the following site: http://www.secrets2business.com/the-difference-between-marine-gps-handhelds-and-their-bigger-brothers/. They have good descriptions.