M400 GPS Running Watch with Heart Rate Sensor

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Wearing the Polar M400 is almost like having a personal trainer at your disposal - but on your wrist! Thanks to its built-in GPS and ''Back to Start'' function, you'll be able to discover exciting new routes, with total peace of mind while tracking your pace, distance and altitude. Furthermore, your activity, steps and calories are trackable 24/7; because after all, each move counts!

Polar combines their expertise in sports, physiology and electronics, coupled with a deep understanding of customer needs. It's no surprise that we've been leading the way in technological innovations and heart rate monitors since 1977.

A stylish GPS companion with 24/7 activity tracking

Whether you're new to working out or a seasoned runner, Polar's M400 is a great waterproof GPS watch built to be your constant companion during all your activities. Both a running watch and a daily fitness tracker, the M400 tracks your steps, activity, sleep and calories 24/7, encouraging you to stay active every day. You can set your own individual training targets and follow your progress towards them using Polar Flow, and heart rate training is possible when paired with the Polar H7 heart rate sensor (included). What's more, you can plan, sync and share your training using the exclusive Polar Flow online service and mobile application. All data is easily viewable. Smart Notifications allow you to see notifications from your phone directly on the screen of your M400.

Polar M400 Features

  • Track pace, distance and altitude with the built-in GPS
  • Follow your 24/7 activity, calories and steps
  • Plan, sync and share your training with Polar Flow mobile app and web service
  • Set targets to beat your personal best
  • Find your way back home with Back to Start
  • Train at the right intensity within your personal heart rate zones (requires H7 heart rate sensor)


Battery life: Up to 8 h training time (when both GPS and HR in use), 24 days in time mode with daily activity monitoring
Battery type : Rechargeable 190 mAh lithium polymer battery
Measurements : 11.5 mm Depth
Weight : 56.6 g
Recommended use : Multisports
Water Resistance : 30 m
Included: M400 training computer, Polar H7 heart rate sensor, USB cable, Polar M400 Getting Started Guide
Warranty : Lifetime of the product

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