Amazon.com: Garmin GPSMAP 66sr, Hiking Handheld with Expanded GNSS and Multi-Band TechnologyHandheld, 3" Color Display (010-02431-00) , Black : Electronics
Generic Case and Screen Protector for Garmin GPSMAP 66 66s 669s 66sc 66st GPS Computer Navigator Silicone Case Film cover 66ST
User manual Garmin GPSMAP 540 (English - 88 pages)
Manually Entering Coordinates on a GPSMAP Handheld | Garmin Customer Support