https://newsroom.garmin.com/press-release/garminr-unveils-all-new-gpsmapr-86-marine-handheld-series-global-communication
buy.garmin.com/.../665244
fccid.io/.../Users-Manual-2-4420226
This unit basailly looks the same but with different maps. Assuming this is just a marine version of the 66i.
Not the same..... Body is longer (taller), for example....
There are also interfaces with other marine hardware. This is definitely a specialized boating device, not a general-purpose handheld.
But it is also useful for hiking/outdoors and in combination with kayaking etc great, because it floats (I think this is the reason for the different body design).
