Polar A300 Fitness and Activity Tracker

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Your body and the A300. Designed to move, and made for each other. It's about getting it right and getting there faster. It's for looking good and feeling great. Make your move.


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Full Features


Fitness test

Polar Fitness Test measures your aerobic fitness at rest in just five minutes. The result evaluates your maximal oxygen uptake (VO2max). Fitness testing will motivate and inspire you to start, maintain or increase physical exercise.



EnergyPointer is an easy-to-use feature which tells you during exercising if the main effect of your training is fat burning or fitness improvement.


Heart Rate Zones

Select and monitor the intensity of your training easily with heart rate zones and follow heart rate based training programmes. The default heart rate zones are based on your maximum heart rate: very light (50–60% HRmax), light (60–70% HRmax), moderate (70–80% HRmax), hard (80–90% HRmax) and maximum (90–100% HRmax).


Smart Calories

The most accurate calorie counter on the market calculates the number of calories burned. The calculation is based on your individual data: your weight, height, age, gender and the intensity of physical activity.


Training Benefit

Get motivating feedback immediately after exercise by syncing your A300 with Polar Flow app or web service.


Activity Guide

Activity Guide shows you different ways to reach your recommended daily activity goal and tells you how active you've been during the day.


Activity Benefit

Activity Benefit gives you feedback on a daily, weekly and monthly basis. The more you move, the greater the health benefits are. You can check up on how you're doing either from your smartphone or from the web.


Activity Tracking 24/7

24/7 activity tracking registers your daily activity at different intensity levels. A300 tracks your steps, calories and sleep time, and notifies you when you’ve been inactive for long periods of time.

Activity Zones

Activity Zones track your daily activities on five intensity levels: resting, sitting, low, medium and high. You can see how much time you spend on each level in Polar Flow web service and app.


Sleep Duration and Quality

A300 tracks your sleeping time automatically from when you lie down and your body movements slow down. By showing you the amount of restful versus restless sleep, Polar Flow gives you a detailed look into how you sleep at night. You can see if your sleep’s affected by any changes in your daily life.


Inactivity Alerts with Vibration

A300 gently vibrates when you have been sitting for too long.


Steps and Distance

A300 counts your steps taken during the day and the distance based on the steps.


Advanced Analysis in Polar Flow Web Service

You can easily analyse every detail of your training in Polar Flow web service and gain a deeper insight into your activities with plenty of possibilities to learn from what you do.


Training Targets

Create detailed training targets in Polar Flow web service and sync them to your A300. During training you can easily follow the guidance on your wrist. When you are out of the right HR zone, A300 will vibrate as well as give a visual and audible alarm.


Training Diary

Follow your activity and plan future training sessions. Choose a month or week view, along with a monthly or weekly summary.


Heart Touch

See your heart rate without pressing any buttons: just bring the A300 close to your heart rate sensor.


Heart Rate

See your current heart rate in beats per minute or as a percentage of your max heart rate.


Instant Analysis in Polar Flow App

See your activity and training data at a glance.


Sport Profiles

Your A300 is equipped with different sport profiles to help you follow your progress in different sports. You can add and remove sport profiles to A300 in Polar Flow web service.


Technical features


Weight 48 g

Thickness 12.7 mm

Water resistant (30m)

Display texts in 15 languages

Updatable software

Memory capacity up to 60 days (with daily activity tracking and 1 hour of daily training)

Rechargeable battery

Battery life up to 4 weeks

Easy sync via Polar Flow app with Bluetooth Smart

Data transfer to PC and Mac with a custom USB cable



Mobile App Compatibility

iPad (3rd & 4th generation)

iPad mini

iPhone 4S

iPhone 5

iPhone 5C

iPhone 5S

iPod touch (5th generation)

iPhone 6

iPhone 6 Plus


HTC One M8 with Android 4.3 or later                 Motorola Moto G with Android 4.3 or later

HTC One Max with Android 4.3 or later               Motorola Moto X with Android 4.3 or later

HTC One Mini 2 with Android 4.3 or later Samsung Galaxy S3 with Android 4.3 or later

Huawei Ascend P7 with Android 4.3 or later        Samsung Galaxy S4 with Android 4.3 or later

LG G Flex with Android 4.3 or later                     Samsung Galaxy S5 with Android 4.3 or later

LG G3 with Android 4.3 or later                          Samsung S5 Mini with Android 4.3 or later

HTC One Mini with Android 4.3 or later                Samsung Galaxy Note II with Android 4.3 or later

HTC One with Android 4.3 or later                       Samsung Galaxy Note III with Android 4.3 or later

LG G2 with Android 4.3 or later                          Sony Xperia Z1 with Android 4.3 or later

LG Nexus 4 with Android 4.3 or later                   Sony Xperia Z1 Compact with Android 4.3 or later

LG Nexus 5 with Android 4.3 or later                   Sony Xperia Z2 with Android 4.3 or later


In the box


Polar A300 with heart rate                                            Polar A300 without heart rate


A300 training computer                                                  A300 training computer

Polar H7 heart rate sensor                                              USB extension cable

USB extension cable                                                     Polar A300 Getting Started Guide

Polar A300 Getting Started Guide


A300 wristband


A small change can make a big difference. Customise your Polar A300 with an easy-to-change wristband to suit different moods and styles.  


Additional Information

Brand Polar

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