Nothing. A gps is the same as a 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.
If you are really wondering what is the difference between self and navigator GPS because you need to buy a new GPS that is not expensive, then you should buy the auto GPS navigator.
The difference between a normal GPS system and one made for trucks is that a truck GPS system also includes routes specifically for truckers to drive on.
Full form of GPRS
You can learn the difference between a portable garmin gps and a bmw navigation system on the following site: http://www8.garmin.com/products/BMW/. They have a lot of info.
Customers say that the easier to use and better customer service go to the Garmin gps while the Raymarine gps has the better radar. Other than these differences they are very similar.
one is for weather and one does gps signals...
Yes of course one is digital and the other is magnetized.
A gps gsm is used for exact location of your vehicle whereas the navigation system aids the person using it to find the location they are looking for .
Auto GPS systems tend to have a larger screen, voice control and a larger base of data. They are designed solely for vehicle use, as opposed to the regular handheld units. http://www.consumersearch.com/auto-gps/review
The difference in accuracy between any gps device is at the most a few feet and usually only a very few inches. Depending on your use for the device this dicrepancy will hardly be noticable.
Difference between GPS and GSM:- ------------------------------------------- GPS:- Global Positioning System that user Satellite signals to triangulate one's location.It is not related to any cellular technology, but phones can be designed to include GPS as a feature.... GSM:- Global System for mobile communications(originally group special mobile), the internationally used standard for cellular phones...