Garmin Forerunner 405 Review

If you're a runner you probably know about the Garmin Forerunner 405; it was released in 2008 just before the Boston Marathon. One of the biggest improvements since Garmin Forerunner 205, is that the 405's size is much smaller compared to the 205. When Garmin changed the watch size, they reduced the weight of their watches by 20%.

Overview of the Garmin Forerunner 405

When I wore the 205, I often felt like I was running around wearing a laptop on my wrist. With the 405 it's something you could wear all day if you wanted. It looks just like a regular watch, only with much better features than a regular watch.

The Forerunner 405 features:

  • Optional heart rate monitor
  • Water resistance
  • Gezel touch screen
  • Internet access
  • GPS tracks under tree and near tall buildings

Pros of the Garmin Forerunner 405

Some of pros of the Garmin Forerunner 405 is that it wirelessly transfers data automatically when you're within 9 feet of your computer. I also discovered that the 405 tracks your running workouts and stores them in its memory so that you can review your progress later on. Compared to the old fashioned pen and paper way of doing it, this is much more conveniant. The Garmin Forerunner 405 is like a regular watch, you could wear it all the time if you wanted. Another advantage of the 405 is that you can send your workouts to your friends, and compete against each other's scores. If you don't have any friends who do running, you can race against a virtual partner, or download realistic running scores and race against the scores. The 405 setup is also very straightforward to and easy to use. The GPS also connects very fast, and the watch can measure pace, intervals and distance.

Cons of the Garmin Forerunner 405

So what are the cons of the Garmin Forerunner 405? One of the cons is that there are no wristbands of varying lengths. For people with larger wrists it can be too tight, or for people with too small of a wrist it can be too loose. Also, the heart rate monitor seems very soft and pliable, but can cut into your skin. The watch is only available in the colors black and green, so if you dislike those colors, you're out of luck. The battery life is also pretty short. It needs to be charged fairly often to avoid the "Low battery" warning during the middle of a workout. Once was enough for me, and ever since I've made sure that I charge it every couple of days.


  • There is no battery indicator so keep an extra battery (CR 2032) on hand just in case it runs out.
  • The 405 is great for using on a bicycle as well.
  • You can use it for swimming also since the watch is water resistant.

Overall the Garmin Forerunner 405 is a great watch for any runner. It may not be the best watch on the market, but it certainly offers a unique style and most of the problems with this watch are little nitpicks.