Choosing between two used 4-inch Garmin marine displays is essentially a question of how you split your time on the water. Do you want navigation and sonar fishfinding on one screen, or would you rather pick up a dedicated chartplotter that comes with a suncover? Both units are Garmin's 4-inch GPSMAP family, both are listed as used and tested working, and both sit within $10 of each other. The difference comes down to the 441s's built-in fishfinder role and the 440S's chartplotter-plus-suncover package.
Quick verdict
Pick the Garmin GPSMAP 441s if you fish and navigate in the same trip and want both functions on the 4-inch display. It carries a listed price of USD 259.99 and includes the mounting bracket, protective cover, power/data cable, owner's manual and supplement. Just note that no transducer is included. Pick the Garmin GPSMAP 440S if you only need chartplotting, want the suncover included, and prefer a slightly lower listed price of USD 249.99.
At a glance
| Product | Listed Price | Price Bar | What you get |
| Garmin GPSMAP 441s 4" Marine GPS Chartplotter Fishfinder | USD 259.99 | | Chartplotter plus fishfinder in one; tested unit with mount, cover, cables, manual |
| Garmin GPSMAP 440S Marine Boat GPS Chartplotter w/ Suncover | USD 249.99 | | Tested working chartplotter; suncover included |
Where each wins
Choose the 441s for fishing and navigation in one display
The GPSMAP 441s is the more feature-rich pick for anglers because it pairs chartplotting with fishfinding in the same 4-inch screen. The unit powers on properly, the display and controls work, and it shows normal cosmetic wear from prior marine use. Along with the chartplotter, you get the mounting bracket, protective Garmin cover, power/data cable, owner's manual and supplement. Keep in mind that the package does not include a transducer, so if sonar matters to you, that's a separate addition.
Choose the 440S for a sun-protected chartplotter at a lower listed price
The GPSMAP 440S is sold as a tested working unit, and the included suncover is a practical bonus for bright, sunny days on the water. It is positioned squarely as a marine chartplotter, with Garmin's familiar interface and detailed charting capabilities. The unit is built for navigation-first boaters who want a reliable 4-inch screen and don't mind leaving fishfinding out of the mix.
Product notes
Garmin GPSMAP 441s 4" Marine GPS Chartplotter Fishfinder TESTED w/ Mount Cover
This used 441s is a strong candidate if you want one compact screen for both chartplotting and fishfinding. The unit powers on, the display and controls respond, and the package includes the mounting bracket, protective cover, power/data cable, owner's manual and supplement. The standout limitation is that no transducer is included, so the fishfinding side of the unit will need a transducer added before you can use that feature. At USD 259.99, this is the higher listed price of the two units, but you are getting the combined chartplotter/fishfinder capability in that 4-inch display.
Garmin GPSMAP 440S Marine Boat GPS Chartplotter w/ Suncover
If you want a straightforward chartplotter and protection from glaring sun, the 440S is the more targeted choice. It is sold as a tested working unit with the suncover included, and it offers Garmin's detailed charting and user-friendly interface for on-water navigation. The 440S comes in at USD 249.99, making it the lower listed price between these two. The trade-off is that this unit is sold as a chartplotter rather than a fishfinder combo, so it fits navigation-focused boaters better than those looking for built-in sonar.
Final call
If your boating mix includes fishing and you want sonar and a chartplotter in one 4-inch unit, the Garmin GPSMAP 441s at USD 259.99 is the one to consider. If you want a dedicated chartplotter with an included suncover and a slightly lower listed price, the Garmin GPSMAP 440S at USD 249.99 is the practical choice.
