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GPS City Q&As » Marine GPS » Garmin GPSMAP 640 Q&As
Garmin GPSMAP 640: Garmin GPSMAP 620 vs 640 - Thread 3 (4 replies) Reply To This Question  
Item Original Question
Go to the Garmin GPSMAP 640 webpage

Garmin GPSMAP 620 vs 640 - Thread 3


› Garmin GPSMAP 640
Author Reply
Robert
Kingston
Original question asked on Mar 21, 2011, 9:57am
I am going to be boating in Lake Ontario around Kingston. I am not sure if the 620 vs 640 is better for me? I like the touch screen and auto routing / guiding features. I think I require the Blue Chart g2 Vision SD card for this capability? Does it come with a power for mounting on a boat?or does either have a lighter adapter?

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Robert
Kingston
Reply #1 on Mar 21, 2011, 9:59am
Does the 620 / 640 come with a power wire for mounting on a boat or inline fuse

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GPS City
Calgary, AB
Reply #2 on Mar 21, 2011, 10:14am
Hello Robert,

Both packages come with a boat mount with bare wire cable. The big difference is the GPSMap 640 is preloaded with Canadian and USA street maps and USA ocean charts. You will need vision maps for marine auto-guidance or plain bluecharts G2 for general navigation.

Cheers

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nelson
north bay
Reply #3 on Aug 3, 2011, 6:21pm
is there an advantage to buying the 640 versus the 620 if all i do is boat in ontario and drive in ontario/quebec and sometime into the usa.the reviews on the inland lakes in ontario are not very good ,i boat on nippising ,muskoka,rosseau,simco what to do??

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Roxie - GPS City
Calgary, AB
Reply #4 on Aug 4, 2011, 9:31am
The benefit would be that all the street maps for Canada and the US are preloaded, so for your driving and boating needs this unit has both marine and vehicle modes.
As for the inland lakes maps, the detail is being updated often, so perhaps in the next revision the area you're interested in will have more information.

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