Polar M400 Runners GPS Watch Review

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Runners aim to improve all the time and devices like the Polar M400 runners GPS watch can help them achieve this goal by giving them tools that can make a difference, especially when used appropriately.

Simply put, watches like the Polar M400 have functional features that are aimed at helping runners get the most out of their training sessions. By providing necessary information to correct mistakes or make additions to routines, runners can potentially experience rapid growth. For this particular item, the features are easily seen to give the intended results.

Polar M400 Runners GPS Watch

Polar M400 GPS Sports Watch & Running Activity Tracker

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To easily understand what the Polar M400 watch can offer here are some of the standard features of the device:

  • Polar M400 GPS Sports Watch & Running Activity Tracker24/7 GPS Features
  • Comprehensive performance tracking
  • Comprehensive progress tracking
  • Smart sensors
  • Water resistant
  • Rechargeable battery
  • Polar Flow and Relive compatible

The 24/7 GPS features of the M400 runners GPS watch by Polar is a helpful aspect since it affects everything from improving the results of training to changing the lifestyle that users lead. The same goes for the performance tracking feature since it covers everything from the distance you covered to the current altitude you are in. The Back to Start feature is great for finding your way back as well.

The comprehensive progress tracking feature on the other hand displays such things as the number of steps taken, the calorie numbers, as well as the quality of sleep that users had. This allows customers to adjust accordingly if there is anything amiss while the Inactivity alert ensures that users always know when they are not being productive.

Polar M400 GPS Sports Watch & Running Activity Tracker - Polar Flow

Polar Flow Mobile and Web-based program for the Polar M400

For the smart sensor aspect, this is basically where the unit tracks heart rate through the H7 Bluetooth Smart sensor. Runners who pay attention to their heart rate when running will find this particularly helpful in increasing or decreasing the intensity of their runs.

Naturally, the water resistant part of the Polar M400’s features is needed because of such things as sweat, rain or other liquid materials being a natural part of running. The rechargeable battery also prevents the hassle of having to change the batteries every time.

Finally, its compatibility with applications such as Polar Flow and Relive allows for a more enjoyable time of using the devices in terms of personal satisfaction or sharing.

Pros and Cons

The pros and cons of using devices like the M400 are as follows:


  • Easy to use even for beginners
  • Functional
  • Lightweight
  • Unobtrusive
  • Durable


  • Can cause overdependence
  • Can potentially reduce progress once device is not used due to lack of a more accurate record

Final Verdict

Polar M400 GPS Sports Watch & Running Activity Tracker

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Runners have survived long before the Polar M400 runners GPS watch was around, but this doesn’t mean that such devices aren’t essential. For faster progress to be seen and for accurate data to be displayed, having this watch while running or just with everyday use is definitely an advantage when compared to not using it. At the very least, many testers have stated that there’s no good reason not to use it.