Running

Polar M400
GPS running watch

Polar M400 is a waterproof GPS running watch and daily fitness tracker. It can help you plan optimal training, break your records, and even find your way back from a run.

Buy now - $254.99
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Smart Notifications

Designed for life

Pair your phone with M400 and get alerts for incoming calls, received messages and push notifications from social media apps to your wrist and stay in the know wherever you are.

Don't miss a thing

See incoming calls and texts at a glance. Answer calls using your watch or decline them when training demands it.

Keep up to date

Read messages conveniently on the M400's display even when your phone is not at hand.

Be where you need to be

M400 alerts you about the appointments on your calendar and makes sure you're always on time.

Stay social

Receive push notifications from social media apps to your wrist and stay in the know wherever you are.

M400 features

Run beyond ordinary

  • Smart Coaching
  • Features
  • SPECS

Training load

Shows you how your training affects your body and helps you compare the load of different sessions. Monitor your load continuously to recognize your personal limits and adjust training intensity and duration accordingly. Available on the Polar Flow web service. More ›

Recovery Status

Shows you the time necessary for recovery before the next training session. Available on the Polar Flow web service. More ›

Fitness test

A five-minute test that measures aerobic fitness from your resting heart rate, heart rate variability and your background information. Complete the test regularly to see the progress you’re making. More ›

Running index

Shows how your running performance is developing. More ›

Training benefit

Delivers motivating feedback immediately after training describing the effect of the session. More ›

Smart calories

Lets you know exactly how many calories you’ve burned based on your weight, height, age, gender, your individual maximum heart rate (HRmax) and how hard you’re training. More ›

Activity Guide

Shows how active you’ve been during the day and gives practical guidance for reaching your daily activity goal. More ›

Activity Benefit

Gives feedback on your daily, weekly and monthly activity, showing how your active choices help you stay healthy. More ›

Running Program

Train for a running event with a personal and adaptive training plan in Polar Flow. Choose from four different targets, 5K, 10K, half marathon and marathon, and get a training plan that fits you and your goals. More ›

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Advanced GPS

The M400’s built-in GPS keeps track of your pace, distance and altitude. With the “Back to start” feature you can safely explore new routes.

Activity tracking

The M400 tracks your steps, activity, sleep and calories 24/7, encouraging you to stay active every day.

Heart rate training

Heart rate training is one of the most effective training methods. Take advantage of it by using a Polar H7 heart rate sensor.

Running cadence from the wrist

Keep an eye on your running cadence to improve your running efficiency and avoid injuries.

Predict your event finish times

Based on your long-term progress, Running Index analysis predicts your event finish times for 5K, 10K, half marathon and marathon runs.

Polar Flow

Plan, sync and share your training using the exclusive Polar Flow online service and mobile application. All data is easily viewable.

Smart Notifications

Smart Notifications allow you to see notifications from your phone directly on the screen of your M400.

Individual targets

You can set your own individual training targets and follow your progress towards them using Polar Flow.

Speed and distance also indoors

Measure your speed and distance while running or walking indoors – all from the movement of your wrist.

Measurements

Weight 56,6g
Thickness 11,5 mm
Display size 128 x 128 px high resolution display

Tech

Integrated GPS with AssistNow™ satellite prediction technology
Activity sensor
Manual and auto laps
Audio alerts
Waterproof
4 MB Flash memory
Rechargeable 190 mAh lithium polymer battery
Battery duration up to 8 hours of training time with GPS and Bluetooth Smart heart rate sensor

Connectivity

Standard micro USB cable for data sync with PC or Mac
Bluetooth Smart with mobile and sensors
Polar Flow web service compatibility with Mac OS X 10.6, OS X 10.7, OS X 10.8, or later, and PC Windows XP, Windows 7, Windows 8, or later
Polar Flow mobile app compatibility
Updatable software
UI languages English, Spanish, Portuguese, French, Danish, Dutch, Swedish, Norwegian, German, Italian, Finnish, Polish, Russian, Chinese, Japanese

Read the reviews

“Polar got it right here.”
– DC Rainmaker

The M400 has been positively received worldwide. Read what the experts are saying.

Made easy for you

Sync all your training details between M400 and the Polar Flow web service and app with Bluetooth Smart.

Made easy for you

After training get a quick visual overview of your training and analyze your achievements in the Polar Flow app.

Polar Ecosystem

Get connected

Polar has an entire ecosystem of excellent applications, services and accessories to help you get the most out of our products. Customize them to match your preferred look. Track your progress using the Polar Flow online service and app.

Polar Flow web service and app

Follow your daily progress and get guidance that helps you meet your goals. Learn how your daily habits can improve your wellbeing.

Polar Coach

Free online tool for your coach or personal trainer to easily follow your progress.

Sensor compatibility

For live, accurate heart rate, use the Polar H7 Bluetooth® Smart heart rate sensor. If you're interested in improving your running technique and performance, go with the Stride sensor Bluetooth® Smart.

MyFitnessPal

Keep tabs on your nutrition by connecting with the world’s largest food, nutrition and calorie database (iOS only).

Buy Now

Take the next step

Buy from the official Polar webstore or find retailer

Buy now - $254.99

Support

Get support and the latest updates

Update your product to take advantage of the latest features and functionalities. Get support and user manuals.

Product Support

Accessories

Upgrade your performance

Upgrade your training computer to enhance your experience and achieve a more complete understanding of your performance.

Products

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The Polar V800 is an advanced multisports GPS watch for serious sports enthusiasts and professional athletes who want to reach peak performance.

Starting from $549.99

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