Specifications and Features:
Navionics Marine and Lakes USA gives you coverage where you need it most!
All lakes available from Navionics' extensive 17,000 lake database held within the state borders, including the Great Lakes as well as coastal marine coverage for that state out to 3 nautical miles
Access to Freshest Data and free PC App included
If your needs grow beyond that state boundary, define your own region!
Additional coverage is available to purchase online for download anytime
Select the coverage you need, as you need it, including lake and marine content, until you fill the 4GB chip
California, Texas and Florida split into 2-selectable regions