Sandman,
I am pretty sure that is the unit have as a back-up.
I bought quite a few years ago so it is not WAAS or DGPS.
But it will give the lat/lon if my chartplotter craps out in an emergency.
I have used it for navigation (GO TO waypoint, and it was fair) no comparison with the new chartplotter though.
Battery operated so it is good to keep onboard, I also keep a handheld VHF for the same reasons.
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