| Connected Features | Wireless features available when paired with a compatible smartphone via Bluetooth or connected to Wi-Fi. |
| Status Page | Adjust display brightness, lock/unlock keys, manage wireless sensors and networks, view phone notifications and current activity information, access installed widgets. |
| Dashboards | Dashboards allow you to see and do more without leaving the active page. |
| Data Fields | A complete list of available Data Fields with operational descriptions and visual examples. |
| Keyboard | Data entry and the GPSMAP 66. |
| Power Sources | GPSMAP 66 power supply information. |
| Mass Storage Mode | Enables computer access to the GPSMAP 66 and microSD card (when installed). |
| Files & Folders | Garmin GPSMAP 66 common file and folder structure reference. |
| Screen Capture | Use the Power Button to save screen shots to internal memory. |
| Backup | Create archival copies of your GPSMAP 66 for future reference and/or recovery. |
| Recovery | Restore a malfunctioning GPSMAP 66 GPSr to its former glory. |