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Garmin Colorado 400c / 400i / 400t

alaTest has collected and analyzed 301 reviews of Garmin Colorado 400c / 400i / 400t. The average rating for this product is 3.7/5, compared to an average rating of 4.0/5 for other GPS for all reviews. Opinions about the size and price are generally positive. The performance and maps are also mentioned favorably. Many are negative about the memory and reliability, and reviews about the durability and screen are different.

usability, maps, performance, price, size

reliability, memory

We analyzed user and expert ratings, product age and more factors. Compared to other GPS the Garmin Colorado 400c / 400i / 400t is awarded an overall alaScore™ of 74/100 = Good quality.

Review analysis

(Based on 301 reviews)

Expert Reviews  

User Reviews  

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Consumer review by: ( review summary for Garmin Colorado 400c / 400i / 400t


alaTest has collected and analyzed 275 user reviews of Garmin Colorado 400c / 400i / 400t from The average user rating for this product is 3.7/5, compared to an average user rating of 4.0/5 for other GPS on Reviews about the design and price are generally positive. The performance and maps also get good feedback. There are mixed reviews on the durability and size, while many are less positive about the memory and reliability.

usability, maps, performance, price, design

reliability, memory

76% of the reviews on give this product a positive rating.

This summary is based on the products: Garmin Colorado 400t Handheld GPS Unit with U.S. Topographic Preloaded MapsGarmin Colorado 400C Portable GPS System With Preloaded Coastal Waters MapsGarmin Colorado 400i Portable GPS System with Preloaded U.S. Inland Lake Maps

Nov, 2015

Expert review by: Adrienne So (

Review: Garmin Colorado 400t


The name “Garmin” is synonymous with “GPS,” the way “Q-Tip” is synonymous with “auditory hygiene.” And the Colorado 400t doesn't let us down: Its light,...

Unbeatable form factor. Click-wheel makes navigation more than effortless. Included carabineer means accidental drops are a rare occurrence. Preloaded topo maps preprogrammed with local haunts we’re predisposed to frequenting. For free. Preposterous

Use that ‘biner — a drop of about 2 feet killed the power. Dig out your spare PC, as Mac software is lacking. Despite that road-lock feature, an average of 18-20 foot accuracy makes it disorienting and dangerous to use while driving

Jun, 2008

Expert review by: Bill Kuch (

Anytone AT-400C CDMA Cellular Repeater Review


One of the downsides of living rural is the lack of cellular coverage, at least in my neighborhood as I'm lucky to get a signal on my T-Mobile phone and have a weak signal on my Verizon phone in my house. The folks at think they may...


Limited coverage area ; No U.S. contact

Indoor coverage: 80 m2 Up-link frequency: 824~849MHz Down-link frequency: 869~894MHz Up-link Gain: 30 dB Down-link Gain: 40 dB Power supply: DC 9V (AC 220V power adapter supplied) Working Temperature: -25 to +55 C Humidity: 5-95% Size(mm): 123x86x33...

Apr, 2012

Expert review by: Rich Owings (

Garmin Colorado 400c review


The Garmin Colorado 400c is the marine version of Garmin's newest handheld GPS series. As such, it includes BlueChart® g2 coastal charts and a worldwide basemap with aerial imagery. The map detail includes includes shorelines, depth contours, navaids,...

May, 2008

Expert review by: GPS Lodge (

Expert Review


Overall I think the Garmin Colorado 400t is a big jump in quality of experience over the eTrex C series and even the GPSMap 60CSx units. I say that for numerous reasons, and acknowledging that the Colorado series costs a lot more, I still think it's a...

Mar, 2008

Expert review by: Scott Martin (

Review: Garmin Colorado 400t Full Review


The Colorado 400t recently launched into an ever expanding category of handheld GPS units, where Garmin has had a long track record of offering solid handheld capabilities in a package that suits customers well. I have been using a Garmin handheld for...

Mar, 2008

Expert review by: Rich Owings (

Garmin Colorado 400t review


The Garmin Colorado 400t is one of the first in a new line of handheld GPS receivers from Garmin. With an entirely new interface, it is very different from the eTrex and 60/76 series units.

Mar, 2008

Expert review by: (

Garmin Colorado 400t, 400i, 400c and 300 Handheld GPS Navigators Review


Garmin's Colorado series includes four handheld GPS navigation devices designed to meet the needs of those with outdoor interests including; hikers, campers, anglers, boaters, joggers and geocachers. For the rigours of outdoor use the Colorado units...

Feb, 2008

Expert review by: Fletch (

Garmin Colorado 400t Review


Garmin's Colorado is a rugged, waterproof outdoor handheld GPS that can be used for hiking, boating, camping, in the car, or Geocaching.

Indiana Jones Meets MacGyver

Jan, 2008

Consumer review by: Dev Null (



Pricey, but well worth the money. Even tells you best times of day to fish. Supports Geocaching natively and the new WhereIgo GPS adventure system. (Fun!) It is ruggedized and water-proof in normal situations. Garmin's website is phenomenal and updated...

This unit is amazing! It's light, comfortable, and well designed. Menus and navigation system are incredibly easy to use with a VERY intuitive interface. The cursor control (Rock n Roller) is a pleasure to use. Within minutes of getting this I had...

No built in rechargeable batteries, though that might not be a con considering you can get AA batteries anywhere ; Comes with U.S. topo maps, but you have to pay extra for the City Navigator maps if you plan to use it in a car ; Backlight on screen...

May, 2009

Consumer review by: N/A (

Really nice piece of equipment


great product.. full color... great detail.. 3D view is cool. definitely worth the money. I bought mine refurbished for much less.

This device is the cream of the crop from garmin... color display... high durability for the trails.. lightweight.. and I mean very light weight.

brightness could go a little higher.... not a huge deal

Mar, 2009

Product Specifications

From fresh water lakes to backcountry trails, Colorado 400i is your guide to the wet and wild. With preloaded U.S. Inland lakes, this rugged, advanced handheld is ready for adventure. Packed with features, it includes a high-sensitivity receiver, barometric altimeter, electronic compass, SD card slot, color display, picture viewer and more. Even exchange tracks, waypoints, routes and geocaches wirelessly between similar units. When the going gets tough, Colorado leads the way. Colorado comes with built-in U.S. Inland lakes and a worldwide basemap with imagery - perfect for all your outdoor pursuits. Map detail includes shoreline details, depth contours, boat ramps and mile markers for thousands of lakes in the continental U.S. With Colorado 400i you can share your waypoints, tracks, routes and geocaches wirelessly with other Colorado users. Now you can send your favorite hike to your buddy to enjoy or the location of a cache to find. Sharing data is easy. Just select "send" to transfer your information to other Colorado units. Intuitive and fun, Colorado features a Rock 'n Roller input wheel for easy one-handed operation and supports GPX files for downloading geocaches and detail straight to your unit. Customize Colorado's interface based on your favorite activity. Even show off photos of your excursions with its picture viewer. Slim, lightweight and waterproof, Colorado is the perfect companion for all your outdoor pursuits. With its high-sensitivity, WAAS-enabled GPS receiver, Colorado 400i locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear - whether you're in deep woods or just near tall buildings and trees, you can count on Colorado to help you find your way when you need it the most. Colorado 400i has a built-in electronic compass that provides bearing information even while you're standing still, and its barometric altimeter tracks changes in pressure to pinpoint your precise altitude. You can even use the altimeter to plot barometric pressure over time, which can help you keep an eye on changing weather conditions. Conveniently plug in optional preloaded SD cards for all your outdoor activities on land or water. Just insert a MapSource card with detailed street maps, and Colorado provides turn-by-turn directions to your destination. Add select topographic maps to take advantage of Colorado's 3-D map view which gives you a better perspective of your elevation. The card slot is located inside the waterproof battery compartment, so you don't have to worry about getting it wet.


Run Time (Up To):15hour(s)

Built-in Display

Diagonal Size:3"
Diagonal Size (metric):7.6 cm
Resolution:240 x 400

Dimensions & Weight


GPS System

GPS Functions / Services:Altimeter / Electronic compass
Recommended Use:Hiking
Type:GPS receiver


Country Kits:United States
Packaged Quantity:1
Product Line:Garmin Colorado


Waterproof: Yes


Tracklog Points:10000