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Garmin Colorado 400c Details
Unit Size: 2.4"W x 5.5"H x 1.4"D
Display Size: 3” Diag.
Weight: 7.3 oz.
Click here, to view the online Users Manual.
Garmin Colorado 400c Special Features
- Pre-loaded with the Garmin BlueChart detailed maps the U.S. Coastal waters and the Bahamas.
- Built-in electronic compass sensor and barometric altimeter sensor.
- SD slot allows for storage of additional MapSource detail and digital images that can be view on the display.
- High sensitivity GPS receiver with turn by turn automatic routing capabilities.
- 3” High resolution Color display screen with backlight.
Garmin Colorado 400c Specifications
| # Of Way- points | # Of Routes | Max battery life / # of batteries | PC Interface Capability | External Antenna | Plotter Type |
| 1000 | 50 Rev. | 15 Hrs. / 2 AA | Cable Include | Optional | Full Mapping |
| Speed Limitation 999 MPH. Supports - Lat/Lon, Loran TD's, UTM/UPS, MGRS , Plus other Grids Including Maidenhead. |
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Garmin MapSource Topo on SD
![]() | For more information on the plug and play Garmin MapSource Topo SD cards click here for a full list of the available regions.![]() |
Other Popular Colorado Units

Rugged and Waterproof Handheld GPS with Detailed Marine Charts Pre-Loaded.
If you are looking for a top of the line back up marine GPS or even a powerful handheld chartplotter for your small boat, the Garmin Colorado 400c is the unit you must have. This powerful handheld is rugged and waterproof and fully loaded with detailed Garmin Bluechart detail for the entire United States and the Bahamas. The Colorado 400c has a sunlight viewable 3” diagonal color display that crisp and easy to see. Also inside the case is a highly sensitive WAAS GPS receiver for superb GPS reception and fast acquisition times.
In addition to the U.S BlueChart detail, the Colorado 400c is also loaded with a worldwide basemap with shaded relief for incredibly enhanced presentation. You will also have major highways and interstates across the United States pre-loaded with shoreline detail of large lakes and rivers as well as a rough coastline of the United States. This map can be further enhanced with the addition of Garmin’s optional Mapsource products like US Topo 2008 and City Navigator NT. All you need is an SD card to store the optional detailed maps and the Mapsource title itself. By adding the City Navigator NT software, the Colorado will then be able to guide you with on screen text, turn-by-turn directions for navigating in your vehicle. Topo 2008 will enhance your map for all of your outdoor hunting and hiking adventures. Garmin has also made many of its more popular Mapsource titles available pre-loaded to SD cards, including Topo USA 2008 and City Navigator NT North America and Europe. There is no need to connect to your PC for map uploading when using the pre-programmed cards.
The features do not stop there. The Colorado 400c handheld GPS will also allow you to wirelessly send waypoints, routes and tracks to other Garmin Colorado units. The new Rock ‘n Roller wheel makes one handed operation a snap, even when mounted in a bracket on the dash of your boat. An electronic compass, barometric altimeter and temperature sensor are also built right into the Garmin Colorado. Garmin has also given you the ability to have user configurable profiles for different uses, like hunting or Auto use.









