Colin - I am looking at the same unit. I think the coastal waters are all unlocked - I cut and pasted the info from the Garmin
It is limited when using G2 and G2Vision charts
but the guideline at Garmin says that it is stuff like "find nearest Marina" that doesn't work. The topography should work.
It would be nice if someone who has this unit would pipe in...
The lowest price
I found was Camera
addict for $405 but I am am worried about the non-name brand company and online purchasing
CameraAddict.com - Garmin*Colorado 400c Handheld GPS Navigation System
It looks like "thenerds.net" has it at $456 but I have never heard of these guys for an online purchase
- have you?
What accessories are you considering? Here's my wish list
Sea Bluechart G2 module
Vehicle power cable
Vehicle Mount (not decided which one yet)
The following is from the Garmin website - https://buy.garmin.com/shop/shop.do?cID=&pID=11024
"Whether you’re sailing the high seas or hiking the backcountry, Colorado 400c is your all-in-one adventure guide. Preloaded with BlueChart® g2 coastal charts, Colorado is made with the saltwater mariner in mind. Packed with features, it includes a high-sensitivity receiver, barometric altimeter, electronic compass
, SD™ card slot, color display, picture viewer and more. Even exchange tracks, waypoints, routes and geocaches wirelessly between similar units. When the going gets tough, Colorado leads the way.
Explore Coastal Waters
Colorado comes with built-in BlueChart® g2 coastal charts and a worldwide basemap with imagery — perfect for all your outdoor pursuits. Map detail includes includes shorelines, depth
contours, navaids, harbors, marinas
, port plans coastal roads for the U.S. and Bahamas