Garmin Nuvi GPS Info

Q:What is GPS?
A:Global Positioning System

Q:How accurate is GPS satellite?
A:between 15 meters compromise accuracy

Q:Diff between GPS and WAAS technology?
A:WAAS stand for Wide Area Augmentation System, WAAS is enhance technology of GPS which implemented only at North America and accuracy between 3meters. in Asia most probably Japan will be having it.
Comparison graph:


Garmin Nuvi comes with alot of range product, here is the comparison chart.

nuvi model	Maps	Screen size	Speaks street names	MP3 player	Traffic	Blue- tooth	FM trans- mitter	MSN Direct
nuvi 200	49 states	3.5"	No	No	No	No	No	No
nuvi 200W	49 states	4.3"	No	No	No	No	No	No
nuvi 250	U.S. Canada	3.5"	No	No	No	No	No	No
nuvi 250W	U.S. Canada	4.3"	No	No	No	No	No	No
nuvi 260	U.S. Canada	3.5"	Yes	No	No	No	No	No
nuvi 260W	U.S. Canada	4.3"	Yes	No	No	No	No	No
nuvi 270	U.S. Canada Europe	3.5"	No	No	No	No	No	No
nuvi 350	U.S. Canada	3.5"	Yes	Yes	Option	No	No	No
nuvi 360	U.S. Canada	3.5"	Yes	Yes	Option	Yes	No	No
nuvi 370	U.S. Canada Europe	3.5"	Yes	Yes	Yes	Yes	No	No
nuvi 650	U.S. Canada	4.3"	Yes	Yes	Option	No	No	No
nuvi 660	U.S. Canada	4.3"	Yes	Yes	Yes	Yes	Yes	No
nuvi 670	U.S. Canada Europe	4.3"	Yes	Yes	Yes	Yes	Yes	No
nuvi 680	U.S. Canada	4.3"	Yes	Yes	Yes	Yes	Yes	Yes
nuvi 750	U.S. Canada	4.3"	Yes	Yes	Option	No	Yes	Option
nuvi 760	U.S. Canada	4.3"	Yes	Yes	Yes	Yes	Yes	Option
nuvi 770	U.S. Canada Europe	4.3"	Yes	Yes	Yes	Yes	Yes	Option
nuvi 780	U.S. Canada	4.3"	Yes	Yes	Yes	Yes	Yes	Yes
nuvi 5000	U.S. Canada	5.2"	Yes	Yes	Option	No	Yes	Option