• Polar M400

        • $126.49 126.49
        • RRP $151.49
        • Save 17%
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Polar M400

For urban and trail runners who want sporty design with advanced GPS and training features, along with loads of options to keep an eye on their activity.


  • Backlight
  • Battery life: Up to 8 h training time (when both GPS and HR in use), 24 days in time mode with daily activity monitoring
  • Rechargeable battery with standard micro-USB cable
  • Firmware update
  • Date and weekday indicator
  • Button lock
  • Time of day (12/24h) with alarm and snooze
  • Water resistant – 30m

Data Transfer:

  • Compatible with PC Windows XP, Windows 7, Windows 8, and later
  • Compatible with Polar Flow web service via standard micro-USB cable (requires FlowSync software)
  • Compatible with Polar Flow mobile app via Bluetooth Smart
  • Compatible with Mac OS X 10.6, OS X 10.7, OS X 10.8, and later


  • Fitness Test: If you’re looking to improve your fitness and want to keep up to date with how well you’re doing, the smart Fitness Test will tell you exactly what you need to know in just five minutes. By regularly comparing your test results, you can see what progress you are making and how your fitness is improving.
  • Running Index: If you’re looking to keep on top of your running performance you’ll find this feature a big help. Regular use over time allows you to see how efficient your running is. Your Running Index score is calculated automatically after every run, based on your heart rate and from the speed data collected from your GPS or stride sensor. A higher reading indicates that you can run faster with less effort. In V800, this feature can also recognise if you're running uphill or downhill.
  • Training Benefit: Motivating feedback that’s delivered straight to you immediately after exercise is something we can all benefit from. So if you want to know the effect of different training sessions, this feature will tell you exactly what you need to know. You get a quick overview after each session, and for more detailed feedback, you can either check your training file or you can get further in-depth analysis at polarpersonaltrainer.com.
  • Smart Calories: OwnCal is the most accurate calorie counter on the market. It calculates the number of calories expended during a training session based on your weight, height, age, gender, your individual maximum heart rate (HRmax) and how hard you’re training.
  • Activity Guide: Activity Guide shows how active you've been during the day. It also tells you how much you need to do to reach the global recommendations for physical activity. With practical guidance like ‘walk for 50 minutes or jog for 20 minutes’ you can choose how to reach your daily activity goal. Meet your goal faster with more intense activities or stay active at a slightly more moderate pace throughout the day.
  • Activity Benefit: Activity Benefit tracks all your active choices during the day and shows how they help you stay healthy. It'll reward you when you've done enough and make you move if there's still a bit missing from your daily activity goal. Activity Benefit gives you daily, weekly and monthly feedback, because the more you move, the greater the health benefits. You can check up on how you're doing either from your mobile or from the web.
  • Polar Flow:
    • Create sport profiles and tailored views for each sport you do.
    • Create detailed training targets, like interval workouts, and sync them to your device.
    • Gain deeper insight and learn from what you do, analyse every detail of your training in Polar Flow.
    • Get a quick visual overview of your training and analyse your achievements.
    • Stay motivated with feedback that’s delivered straight to you immediately after exercise.
    • Easy sync with Bluetooth Smart.

In the Box:

  • M400 training computer
  • USB cable
  • Polar M400 Getting Started Guide

Buy Polar from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Delivery costFREE
  • Delivery toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


  • Colour: Blue, Black

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