High-resolution and high-contrast display, ideal for outdoor training

Accurate heart rate (requires H7 heart rate sensor - included)

Water-resistant to 100 ft

24/7 activity tracking

Integrated GPS

Training targets

Finish time estimator

Set targets to beat your personal best

Customised sport profiles

Polar M400 combines style, performance and comfort. It's a blend of sporty design, integrated GPS, activity tracking and training features.

Lightweight and compact, M400 is made to be worn all day. Get guidance throughout your training, monitor your activity and get alerts when it's time to get up and move.

M400 gives you the freedom to explore new, more adventurous routes: you can measure your pace, distance and altitude and find your way back home.

When you pair your M400 with the H7 heart rate sensor, you'll always know when you're within your target heart rate zone and training at the right intensity

Track your speed, distance and altitude with the built-in GPS. M400 also keeps tabs on your personal bests and lets you know when you've set a new record.

On top of your regular training days, getting enough daily activity is an important part of keeping fit. M400 tracks your steps, calories and sleep time and notifies you when you are inactive for long periods of time. It also gives you a daily activity goal and tips to reach it.

When you use M400 together with the Polar Flow web service and app, you get all the tools, stats and support you need to step up your game. Challenge yourself with new goals, go over your training sessions and learn more about your active lifestyle.

Polar flow app:

› Get a quick visual overview of your training and analyse your achievements.

Polar web service

› Share your favorite training sessions

› See maps of your training routes with explore and relive features

› Create sport profiles and detailed training targets such as interval workouts and sync them to your device