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Garmin Oregon 550
Tomtom XXL 530
Garmin Oregon 450
Lowrance Endura Sierra
Alpine PND-K3
Garmin Oregon 550 GPS
Tomtom XXL 530 S GPS  Vehicle  5  LCD
Garmin Oregon 450 Handheld GPS Receiver
Lowrance Endura Sierra Handheld GPS Receiver
Alpine PND-K3 GPS Receiver
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Release Date
May 2009
Oct 2009
Dec 2009
Sep 2009
Apr 2008
Map capabilities
Map cartridges / Data cards
Internal, Map cartridges / Data cards
Map cartridges / Data cards
Map cartridges / Data cards
Internal, Map cartridges / Data cards
Waypoints
2000.0
100000.0
2000.0
4000.0
6000000.0
Receiver type
12 Channels
12 Channels
20 Channels
Designation
Outdoor
Automobile
Outdoor
Hiking, Outdoor
Enhanced accuracy
WAAS enabled
Touch Screen
Touch Screen
WAAS enabled
Form Factor
Handheld
Fixed
Handheld
Handheld
Handheld
Input Method
Touch Screen
Touch Screen, Voice Command
Touch Screen
Touch Screen, Keypad
Touch Screen
Screen Size
3.0 inch
5.0 inch
3.0 inch
2.7 inch
User interface
Touch Screen
Touch Screen
Touch Screen
Touch Screen, Keypad
Touch Screen
Average Rating
 4.5 stars
 3.5 stars
 2.0 stars
 2.5 stars
 3.0 stars
Navigation
100% Positive
100% Positive
100% Positive
100% Negative
100% Negative
Display
100% Positive
100% Positive
100% Positive
100% Positive
Maps
100% Positive
100% Positive
100% Positive
100% Positive
100% Positive
Usability
100% Positive
100% Positive
100% Positive
33% Positive
67% Negative
100% Positive