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Garmin nuvi 1690
Magellan Roadmate 2120T-LM
Magellan RoadMate 2035 GPS Receiver
Magellan Explorist GC
Magellan RoadMate 2036
Garmin NUVI 1690 4 4 in  Car GPS Receiver
Magellan Roadmate 2120T-LM GPS Receiver
Magellan RoadMate 2035 GPS Receiver
Magellan Explorist GC GPS Receiver
Magellan RoadMate 2036 GPS Receiver
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Release Date
Sep 2009
Nov 2011
May 2010
Mar 2010
May 2010
Designation
Automobile
Automobile
Automobile
Automobile
Automobile
Map capabilities
Internal, Map cartridges / Data cards, Download maps
Internal
Internal
Internal, Download maps
Map cartridges / Data cards
Receiver type
12 Channels
12 Channels
Enhanced accuracy
Touch Screen
WAAS enabled
WAAS enabled, EGNOS enabled
WAAS enabled, EGNOS enabled
Form Factor
Fixed
Fixed
Fixed
Handheld
Fixed
Input Method
Touch Screen, Voice Command
Touch Screen
Touch Screen
Keypad
Touch Screen, Keypad
Screen Size
4.4 inch
4.3 inch
4.3 inch
2.2 inch
4.3 inch
User interface
Touch Screen
Touch Screen
Touch Screen
Keypad
Average Rating
 3.9 stars
 1.6 stars
 3.5 stars
 3.7 stars
 4.2 stars
Navigation
100% Positive
100% Negative
80% Positive
20% Negative
Usability
100% Positive
66% Positive
34% Negative
Display
54% Positive
46% Negative
66% Positive
34% Negative
Maps
40% Positive
60% Negative
100% Positive
100% Positive
100% Positive