0ur opinion: :The GPSMAP 276C is a versatile color chartplotter and automobile navigator, perfect for land or water. Along with its counterpart, the GPSMAP 276C, this portable navigator features a sunlight-readable 256-color TFT display and a built-in autorouting basemap that can route you on major interstates and highways. 0n water, the GPSMAP 276C is a dependable color chartplotter with built-in basemap enhanced by Garmin's marine cartography. For extra-precise navigation, the 276C has a Course Deviation lndicator (CDl) - a feature normally found on aircraft, but equally practical for the marine environment. The CDl quickly indicates whether your boat has veered off-course and helps you get back on track quickly. The 276C also supports external NMEA sources for water depth, water temperature, and water speed through two serial interfaces. 0n land, the GPSMAP 276C's autoroute basemap can route you on interstates and major highways. The 276C is compatible with BlueChart maps, which add extra detail when you're out on the seas. lt also accepts optional MapSource data cards, so you can add other types of map data easily. For convenience and easy map transfer, you can connect the 276C to your computer with the included USB cable. NMEA 0183 input/output Maps & Memory - Basemap with the ability to add maps through Garmin data cards 3000 Waypoints/favorites/locations 50 Routes 10,000 points Track log Unit Dimensions - Width 5.7 x Height 3.2 x Depth 1.9 (14.5x8.1x4.8cm) Unit Weight - 13.6 ounces (385 grams)
:This WAAS-enabled, 12 parallel channel GPS receiver provides color chart plotting for both land and sea, making it an excellent addition to any boat or automobile dashboard. lts display-- 3.8-inch, 480 x 320 pixel, 256-color backlit TFT--provides enhanced sunlight-readability, and its adjustable quad helix receiving antenna with remote antenna capability delivers superior data reception.
Used with your car, the 276c's auto routing capability lets you select a destination and get turn-by-turn directions. There's even voice prompt guidance; just hook up a 12-volt speaker cable (sold separately) and the GPSMAP 276C will audibly tell you when you need to turn and how much farther you have to go.
Data provided with the unit includes 3000 user waypoints with an expanded list of waypoint symbols; 50 reversible routes with 1,200 waypoints per route; 10,000 point automatic track log with 15 saved tracks and 700 saved track points each; position formats including Lat/Lon, UTM, Loran TDs, Maidenhead, MGRS, User, and more; a large numbers option for easy viewing, and much more.
ln addition to its built-in basemap detail (cities, interstates, coastline detail and US tide stations), the GPSMAP 276C accepts data from MapSource CD-R0Ms, including BlueChart for offshore detail, Recreational Lakes with Fishing Hot Spots for detail of selected inland lakes, and City Select for street-level maps. The package includes the GPSMAP 276c, USB interface cable, power/data cable, marine mount, Trip & Waypoint Manager CD, rechargeable lithium-ion battery, AC adapter, owner’s manual, and a quick reference guide. Manufacturer rating of the battery lists it at up to 15 hours of use depending on backlight setting.
Piece Availability: Usually ships in 24 hours
Testimonials
Average Buyer Rating:

Buyer's feedback: 
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* A Good Little (Outdated) Chartplotter ...
I am happy with this chartplotter but right now I wouldn't recommend it. For one thing Garmin nickels and dimes you to death if you want to actually use this. The memory is very expensive and proprietary. You need to buy additional memory to download any charts into this device. And the charts are VERY expensive and come with all kinds of obnoxious copy protection. Also worth mentioning is that the screen is hard to read in broad daylight. But the deciding factor is that Garmin is just now rolling out their next generation units that will replace this one. I would wait the few weeks it will take to get one of the new ones which will use standard SD memory and provide bigger, brighter screens, etc.
Buyer's feedback: 
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Great product!
Its the perfect GPS! the size, the weight, the performance... all in one package!
Buyer's feedback: 
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* I think the older model (176C) was better for me ...
I'm a Amazon River Pilot and I use GPS only for marine navigation. The GPSMAP 276C is a good equipment but in my opinion has too many features that most people do not use. Before I had a 176C that was much more easy and quick to use for marine navigation: it was made for that. The only advantage I see in the 276 is it's better screen resolution. I only got the 276C because my 176C had a problem in the screen and I could not get a new one as it had been descontinued. Also Garmin charts are very bad for the Brazilian coast: I do not understand why they use charts from so many countries that do not have good information about the Brazilian coast ( russian charts for exemple ).
Buyer's feedback: 
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Interesting product
So far, we don't have this completely up-and-running. It hasn't been particularly intuitive as far as set-up goes. (At least for us, and we're usually pretty good with technology.) It looks as though it will be good. Maybe after we actually take it out for a "spin", we'll have better insight.
Buyer's feedback: 
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* A multi-functional GPS wonder, But.... ...
A multi-functional GPS wonder, But... be sure and have a hefty stack of money if you want all the maps, bells and whistles that make this unit so remarkable. Lets start with the main reason I purchased the 276c, for my boat. The Blue Chart marine maps combined with the flexability of the unit makes even complex marine navigation a snap. The large screen allows me to see my position on the water at a glance. Even in areas that are wrought with hazards and multiple channel markers the screen shows everything I need to know to safely navigate at any sunlight angle. When I moved it to my car, I enjoyed the same features that made it great on the water. The turn by turn routing (with voice) and the big screen worked flawlessly. Using it for land nav was also enjoyable except for the size of the unit making it a bit cumbersome. Regarding other peoples complaints about Garmins tight hold on its pricey mapping products, Well they are in business to make money, they have great map products, and you usually get what you pay for. Overall I am very pleased with this product, with the only real downside being the high cost of obtaining all the additional "proprietary" goodies you need to flesh the system out for multiple usage. Again you get what you pay for and for the price I would say that this is one of the finer GPS units on the market.