GPSMAP 66s/st Device Overview


Front and back of device with callouts

1

GNSS antenna

2

Power button

Power

3

Buttons

4

Micro-USB port (under weather cap)

5

microSD® card slot (under batteries)

6

Battery compartment

7

Mounting spine

8

Battery cover D-ring

GUID-C8E8E9D8-9FB4-41B8-B0BC-716C62EB54AB v7
August 2025