Garmin Forerunner 405CX GPS Sport Watch with Heart Rate Monitor
- Loaded with serious training features, Forerunner 405CX continuously records your time, distance, pace, calories burned and heart rate.
- And advanced training features will challenge you to step up your pace race against Forerunner’s Virtual Partner
- Forerunner 405CX comes with a flexible, wireless heart rate monitor to help you make the most out of your training.
- With Forerunner 405CX, you can share your locations, advanced workouts and courses wirelessly with other Forerunner 405 users.
- Once you’ve logged the miles, innovative ANT+ wireless technology automatically transfers data to your computer when Forerunner is in range.
Amazon.com Product Description
The Forerunner 405CX is the evolution of GPS-enabled training. This sleek sport watch tracks your 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 second wrist band option suitable for smaller wrists.
The evolution of GPS-enabled training. |
Continuously records your time, distance, pace, calories burned and heart rate. Click to enlarge. |
Transfer data to your computer when Forerunner is in range–no cables, no hookups. Click to enlarge. |
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 memory 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 405CX, you can share your locations, advanced workouts and courses wirelessly with other Forerunner 405 users. Send your favorite 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 or our optional Garmin Training Center software. You can even plan workouts on your computer and then send them to your Forerunner.
Train Year Round
Take your training inside with the versatile Forerunner 405CX and optional wireless accessories. Pair it with an optional foot pod to track your speed, 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.
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
Garmin Forerunner 405CX GPS Sport Watch with Heart Rate Monitor
Translating...


When I ordered this watch a second watch was included for free. Today the 405cx arrived but no second watch was delivered. I will return this watch next week unopened.
Rating: 5 / 5
Quite simply, the heart rate monitor does not work, period. Garmin needs to team with Polar. The GPS functions are great. Now I wear the 405CX on my left wrist and my “old” Polar on my right wrist. When I bought the 405CX from Amazon, I also received “free” a Forerunner 50. It didn’t work. I returned it to Amazon for a replacement. It didn’t work. I gave it to my daughter. It didn’t work for her. Junk. I guess it still works OK as a watch.
Rating: 3 / 5
This is a very frustrating gadget. I have gotten most of it’s functionality to work, but it has been a challenge, and key pieces remain unworkable. Here are the problems I ran into:
1. It defaulted into Russian. Try doing an initial configuration in Russian. There are no entries in the manuals on how to change the language, and the on-board menu system doesn’t help when you can’t read it.
2. The quick launch instructions give outdated information–e.g. the URL given to download the software for your PC to work with the watch is completely wrong.
3. I have been unable to get the watch to synch with the foot pod for pacing information etc. They don’t work together.
4. The watch still will not synch up with my PC. They sense eachother, communicate initially, attempt to transfer information, then it flashes “Failed.” It tries again every couple of minutes they are within range of each other. This is a common problem. If you do a Google search you will find hundreds of others with this problem–with some esoteric solutions that work for some and not for others. None of them work for me.
5. Tech support. Tech support is unresponsive. You can stay on hold for as long as you like, but nobody will ever answer. This is very frustrating.
6. It is hard to read, and hard to manipulate when you are running. Some of the readouts are too small, and the touch dial is difficult to operate, when you are in motion.
7. It is bulky and heavy. I thought it would be thinner and lighter. I was surprised when I put it on. It felt like it was from the 1980s.
Total for the watch, heart monitor, and foot pod was about $450.00. That is a lot of money for a piece of junk, which is what this is when the major functions don’t work, the functions that do work are hard to use when you are using it (i.e. when running), and you can’t get any help from their support.
Rating: 1 / 5
Buy this monitor now. Easy to use and small enough so you dont feel like you have a laptop on your wrist. The bezel touch menu navigation can be sensitive to bumps but the lock feature solves most of your problems. Great product.
Rating: 4 / 5
I agree with the majority of the positive reviews here. In fact I would probably give the 405CX five stars if I owned a PC, but I don’t. The device is great as a device and does what it advertises, but if you own a Mac, stay away. I immediately had problems getting the watch to upload its data to the Mac when I got the device three months ago. It would try repeatedly and eventually succeed. Then I installed their upgrade and now it is useless. It has been trying to upload its data for almost a week without success. Three e-mails to Garmin on this have yielded zero responses. They do not post old software versions so reloading the old version is not an option.
I am convinced that they just do not know how to write software and it really shows -no logging of failures, hence no way to diagnose why it won’t upload, no feedback mechanism so that failures can be tracked by Garmin in order to improve their software, feature poor interface, etc. Add to this that their web site support requires you to re-enter all of your data even though you are logged in and they have your product information. Garmin may understand GPS, but they don;t get software and they are a long way from understanding what a 21st century web experience should be.
I could sing the praises of the watch’s functionality and ergonomics, but what is the point? Without being able to upload your training history, I might as well use a cheap Timex and Google maps to track my training. Find another solution if you own a Mac.
Rating: 1 / 5