The Forerunner 405CX is the evolution of GPS-enabled training. This sleek sportswatch tracks your time, distance, pace and heart rate, then wirelessly sends the data to your PC for later analysis. The 405CX features heart rate-based calorie computation and comes with a fabric wrist band option suitable for smaller or larger wrists.
Watch Results
Loaded with serious training features, Forerunner 405CX continuously records your time, distance, pace, calories burned and heart rate. Each workout is stored in large internal memory (1000 laps) so you can review and analyze the data to see how you've improved. And advanced training features will challenge you to step up your pace — race against Forerunner's Virtual Partner® to improve your times, or set up interval workouts without having to circle the track. You can even download recorded courses to compete against previous workouts. To use the watch, simply tap the touch bezel to change screens without fumbling for a button.
Track Heart Rate
Forerunner 405CX comes with a flexible, wireless heart rate monitor to help you make the most out of your training. The digital heart rate monitor continuously tracks heart beats per minute and uses your heart rate for advanced calorie computation, so you know how many calories you're burning. Train in a certain heart rate zone to improve your fitness level or compare your pace and heart rate to past performance on the same run.
Share Workouts Wirelessly
With Forerunner 405 CX, you can share your locations, advanced workouts and courses wirelessly with other Forerunner 405 users. Send your favourite workout to your friends to try, or compete against someone else's recorded course. Sharing data is easy: just select "transfer" to send your information to a nearby device.
Run, Sync, Store and Share
Once you’ve logged the miles, innovative ANT+™ wireless technology automatically transfers data to your computer when Forerunner is in range. No cables, no hookups. The data’s just there, ready for you to analyze, categorize and share through our online community, Garmin Connect You can even plan workouts on your computer and then send them to your Forerunner.
Train All Year Round
Take your training inside with the versatile Forerunner 405 CX and optional wireless accessories. Pair it with an optional foot pod to track your pace, distance and running cadence indoors when GPS signals are unavailable. The wireless foot pod clips onto your laces for easy removal and automatically turns on when you start moving. Or pair your Forerunner with an optional speed/cadence bike sensor to track the speed and distance of your cycling workouts.

Physical & Performance: |
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| Unit dimensions, WxHxD: | 1.88" x 2.78" x 0.646" (4.8 x 7.1 x 1.6 cm) |
| Display size, WxH: | 1.06" (2.7 cm) diameter |
| Display resolution, WxH: | 124 x 95 pixels |
| Weight: | 2.11 oz (60 g) |
| Battery: | rechargeable lithium-ion |
| Battery life: | 2 weeks in power save mode; 8 hours in training mode |
| Water resistant: | yes (IPX7) |
| GPS-enabled: | yes |
| High-sensitivity receiver: | yes |
| RoHS version available: | yes |
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| Basemap: | no |
| Ability to add maps: | no |
| Accepts data cards: | no |
| Lap history: | 1000 laps |
| Waypoints/favorites/locations: | 100 |
| Routes: | 0 |
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| Heart rate monitor: | yes |
| Bike speed/cadence sensor: | yes (optional) |
| Foot pod: | yes (optional) |
| Automatic sync (automatically transfers data to your computer): | yes |
| Garmin Connect™ compatible (online community where you analyze, categorize and share data): | yes |
| Garmin Training Center® software compatible: | yes |
| Virtual Partner® (train against a digital person): | yes |
| Courses (compete against previous workouts): | yes |
| Auto Pause® (pauses and resumes timer based on speed): | yes |
| Auto Lap® (automatically starts a new lap): | yes |
| Auto Scroll (cycles through data pages during workout): | yes |
| Multi-sport (changes sport mode with a press of a button): | no |
| Advanced workouts (create custom, goal-oriented workouts): | yes |
| Simple workouts (input time, distance and calorie goals): | yes |
| Pace alert (triggers alarm if you vary from preset pace): | yes (for advanced workouts only) |
| Time/distance alert (triggers alarm when you reach goal): | yes (for advanced workouts only) |
| Interval training (set up exercise and rest intervals): | yes |
| Heart rate-based calorie computation: | yes |
| Customizable screen(s): | yes |
| Barometric altimeter: | no |
| Unit-to-unit transfer (shares data wirelessly with similar units): | yes |
| Power meter compatible (displays power data from compatible 3rd party ANT+™-enabled power meters): | no |
| Sport watch: | yes |
| Additional: |
Watch functions include dual time, date and alarm. Garmin Connect and Garmin Training Center are compatible with Windows® 2000 or later and Intel-based Mac running OS 10.4 or later with Safari. |
What's in the Box:
- Forerunner 405CX
- USB ANT stick™
- Heart rate monitor
- Two additional wrist straps
- AC charger
- Charging clip
- Owner's manual on disk
- Quick reference guide
Press Release
Garmin® Makes Every Calorie Count with New Forerunner® 405CX
OLATHE, Kan./April 2, 2009/Business Wire — Garmin International Inc., a unit of Garmin Ltd. (NASDAQ: GRMN), the global leader in satellite navigation, today announced the Forerunner 405CX – the latest in Garmin’s popular line of GPS-enabled fitness devices, adding increased accuracy in heart rate-based calorie computation and improved comfort to the Forerunner 405 model that took the fitness world by storm. The Forerunner 405CX was announced in preparation for world-class marathons in Paris and Boston, where it will be on display at Garmin booths in each location.
“As today’s runners evolve, so must their technology. Once again Garmin leads the way with our smartest Forerunner yet,” said Dan Bartel, Garmin’s vice president of worldwide sales. “Refined data traditionally reserved for elite athletes and top-tier trainers is now available to anyone interested in accurately counting calories and tracking their progress, all through a stylish and comfortable fitness watch.”
Using algorithms developed by exercise scientists and world-class athletes, Forerunner 405CX monitors the micro changes in a user’s heart rate and uses that detailed information to better calculate the number of calories burned during aerobic activity. Whether out running, on a bike, in step class or on a hike, Forerunner 405 CX users will get instant gratification as they see the results of their hard work. And those workouts will be more comfortable than ever, as users will have the choice of two additional form-fitting bands to accommodate large and small wrists alike. At only 60 grams and available in a new deep blue color, Forerunner 405CX fits in at the gym or around the office.
In developing the Forerunner 405CX and its heart rate-based calorie computation, Garmin worked with Firstbeat Technologies Ltd., a technology company based in Finland. Firstbeat is an industry leader in heart rate analysis, specializing in developing user-centered software solutions for heart beat signal analysis in exercise and sports, weight management, and stress monitoring applications.
In addition to monitoring heart rate and counting calories with precision, Forerunner 405CX tracks speed, distance and location accurately and effortlessly, and the revolutionary patent-pending touch bezel on the face of the watch makes navigating the options easier than ever. Simply by tapping, holding or running a finger along the bezel, runners can begin a new workout, access their training history or challenge a Virtual Partner™. The Forerunner 405CX makes training with a Virtual Partner easy and efficient. Runners can adjust the Virtual Partner’s pace without stopping in the middle of a workout, and the Virtual Partner is always on and ready for a challenge.
The Forerunner 405CX is water-resistant (IPX7) and can be used outdoors or indoors (with an optional, streamlined foot pod that can fit on laces or under certain shoes’ insoles), making it the ultimate year-round, all-weather training tool. And the high-sensitivity GPS receiver with HotFix™ quickly acquires and sustains satellite reception, whether you’re tackling a wooded trail or jogging through the urban canyons of skyscrapers. An optional speed/cadence bike sensor helps cyclists monitor their pedaling cadence and wheel speed.
Once the workout is done, the training is far from over. Using ANT+ technology, the Forerunner 405CX sends workout data to the user’s PC or Mac via automatic wireless data transfer. There’s no need to take off the watch or bother with cables as the computer automatically syncs with the Forerunner 405CX once it’s in close proximity. And the data transfer is a two-way street. Runners, joggers, cyclists and hikers can send courses, goals and workouts to their Forerunner 405CX before they begin, and then the data gets sent back to the user’s computer when the workout is over. Athletes can log their workouts, track their totals, set goals, share workouts with coaches, friends and family and participate in an online fitness community at Garmin ConnectSM — Garmin’s online training site. Users can also share courses and workout data from one Forerunner 405CX to another through wireless data transfer.
The wireless features of Forerunner 405CX are enabled by ANT+ personal area network technology. ANT+ is a leading wireless interface protocol enabling ultra low power applications like fitness monitors. ANT+ offers all the benefits of digital wireless communications with much lower power consumption than other wireless protocols.
The Forerunner 405CX is the latest breakthrough from Garmin, which has spent 20 years using technology and innovation to enhance users’ lives, making Garmin a household name in the automotive, aviation, marine, wireless, outdoor and fitness industries. To learn more about the Forerunner 405CX and Garmin’s other products and services, go to www.garmin.com and www.garmin.blogs.com.
Reviews Summary (based on 1 customer):
| Overall Rating |
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| Value for Money |
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| Met my expectations |
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| Overall, 1 of 1 customer (100%) would recommend Garmin Forerunner 405CX (405 CX) - NOH to a friend |
Customers Reviews:
| 7 of 7 people (100%) found the following review helpful: |
| great product, by ruth mccrudden on 26/01/2012 |
| Overall Rating |
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| Value for Money |
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| Met my expectations |
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| treated this to myself as hoping to run marathon later this year. it was a refurbished model so not overly expensive. was a bit concerned that it may be a little complicated to use as i am not a gadget -head but this was surprisingly easy to learn to use. used the nylon strap as plastic strap too large and bulky. be careful that pins don't take flight during change as i lost one. great product and a must for runners who are taking their training seriously and for those who just like to know how far and how fast they have run. |
| [1] |

Q:
Details: Does this watch include finnish language, and does the heart rate monitor have the chest straps?
by riku @ 05/05/2012
1 Answers
A: Yes, this device will come inclusive with the Finnish language but will only come with the standard HRM strap.
by Mike @ 09/05/2012
Q:
Details: Is the NOH guarantee by Garmin and what does it cover and for how long? Many thanks Phil
by Phil Jewell @ 23/11/2011
1 Answers
A: Garmin NOH products are guaranteed by Garmin for 1 year
by Joe @ 23/11/2011
6 of 6 people (100%) found this answer helpful
Q:
Details: Does this item come with the heart rate strap?
by nikki @ 20/11/2011
1 Answers
A: Hi you can read what in the box in the description. it comes with Two additional wrist straps. Thanks
by @ 21/11/2011
2 of 5 people (40%) found this answer helpful
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