A:AnswerI do not think the topo it comes with has any Navionic detail, but it is capable of using them. Both Garmin.com and other map sites have them for download.
A:AnswerThe eTrex 20x does not let you categorize or sort saved waypoints by folder. By changing the map icon for each waypoint, you can then use the Waypoint Manager feature to sort by icon type which may help narrow down your search.
^DK
A:AnswerWhile most maps will work, we cannot guarantee compatibility with 3rd party mapping products. We would recommend reaching out to the map publisher to verify.
A:AnswerHello,
The below article will explain what you are seeing on the device.
https://support.garmin.com/faqSearch/en-US/faq/content/bahqpxKhZt69cgKIQaYGO7
Thanks
Chris