Polar A370 fitness tracker with continuous heart rate

Follow your heart rate around the clock with Polar’s continuous wrist-based heart rate solution.

Continuous heart rate complements Polar’s 24/7 activity tracking. The combination of continuous heart rate measurement and 24/7 activity tracking takes into account the intensity of your activity more comprehensively – even activities with very little arm movement (such as cycling or walking with grocery bags) can be counted towards your daily activity goal and calorie burn more accurately. The heart rate graph in the Polar Flow app and web service shows how your heart rate varies during the day, and you’ll also get to know your highest and lowest daytime heart rate and your lowest night-time heart rate.

Polar’s continuous heart rate solution is intelligent, dynamic and optimized to complement 24/7 activity tracking in the best possible way. Your wrist unit checks your heart rate at regular short intervals, and if it detects that your heart rate is elevated, it automatically starts to record it. When your heart rate goes down, the recording stops automatically. The automatic heart rate recording also begins when the accelerometer on your wrist unit detects a high activity level. This way, your Polar device makes sure you get credit for all those important active moments in your day.

Tracks your daily activity at five intensity levels for 24 hours a day, seven days a week, and provides a complete picture of all of your activity. It counts your active time, daily burnt calories, steps, distance from steps and sleep.

It’s based on the analyses of the frequency, intensity and regularity of your movements together with your physical information.

Intensity levels are:

1. Resting (sleep and rest, lying down)
2. Sitting (sitting or other passive behavior)
3. Low (standing work, light household chores)
4. Medium (walking and other moderate activities)
5. High (jogging, running and other intense activities)               

You can also see how different activity intensities accumulate daily activity: the higher the intensity, the faster you’ll reach your activity goal. Find more examples for low, medium and high intensity activities in Polar Flow app and web service.

Most adults do very well with eight hours of sleep, but sleep needs may vary from person to person. It is recommended that adults get between 7 to 9 hours of sleep. Your sleep needs are affected by several factors like individual characteristics, training load, mental stress, body’s condition and possible sleep debt.

Polar Sleep Plus automatically detects the timing, amount, and quality of your sleep based on your wrist movements.

• Sleep time shows the total time between when you fell asleep and when you woke up.
• Actual sleep shows how much of your sleep time was actually spent asleep.
• Interruptions show you how much time you spent awake during the night.
• Sleep continuity tells you how continuous your sleep was on a scale of 1-5, where 5 reflects uninterrupted sleep. The lower the value the more fragmented your sleep was.

You can set your preferred sleep time to define how long you aim to sleep every night. You can also rate your sleep. You'll receive feedback on how you slept based on your sleep data, your preferred sleep time and your sleep rating.

Monitor your long-term sleeping patterns in Polar Flow. By following your sleeping patterns you can see if they’re affected by any changes in your daily life and find the right balance of rest, daily activity and training.

We need physical activity to stay healthy. The Activity Goal helps and motivates you to stay active all day long. Your device tells you your daily Activity Goal and guides you on how to reach it. It’s based on your personal details chosen level of activity and general health recommendations. The activity bar on your device fills up during the day based on the duration and intensity of your activity.

You can stay active at a moderate pace throughout the day or meet your goal faster with more intense activities. Your device helps you to reach your daily activity goal by giving practical guidance like ´walk for 50 minutes or jog for 20 minutes´. You can find more tips on how to reach your Activity Goal in the Polar Flow app and web service. 

The foundation of Polar Activity Goal is in evidence-based physical activity guidelines which establish the minimal amount of physical activity needed to achieve important health benefits. The health benefits include healthy body weight, healthy bones, muscles and joints, psychological well-being, and reduced risk of certain diseases.

Includes the cumulative time you spend on your feet and on the move. In other words, low, medium and high intensity activities are considered Active Time. To get more active time, avoid sitting or break it up regularly with short walks.

Research has shown that both the reduced time spent inactive and breaks in inactivity have health associations. Replacing two hours of sitting per day by low intensity activity consumes calories equivalent to brisk walking for 30 minutes.

You can see the time spent on different intensity levels in the Polar Flow app and web service.

Your device counts your steps and the distance you walk during the day. Your steps are estimated based on the frequency, intensity and regularity of your wrist movements.

Stores all your daily physical activity. You can easily follow your daily and long-term physical activity in Polar Flow app and web service. The total active time is the cumulative time of body movements that are good for your body and health.

You will find detailed information in the Polar Flow app and web service, like time spent at different activity intensity levels, average of daily goal completion, calories burned and steps taken, amount of inactivity alerts and sleep time and quality.

Tracks all your active choices during the day and shows how they help you stay healthy. Strong scientific evidence exists on the numerous benefits of physical activity. Activity benefits include, e.g. heart health, muscle and bone health, stress reduction and sleep quality.

The Activity Benefit rewards you by giving you daily, weekly and monthly feedback, because the more regularly you move, the greater the health benefits. You can check up on how you're doing either from the Polar Flow app or web service.

Reminds you to get up and avoid sitting and standing still for too long – even on those days when you gain enough daily activity. Being inactive has a negative impact on your blood circulation, metabolism and energy expenditure.

After 55 minutes of being inactive your device gives you an Inactivity Alert which reminds you to add active breaks to your daily routines. If you continue being inactive for more than one hour, you will see an inactivity stamp in your daily activity data.

You won’t get any Inactivity alerts during night time.

Your training computer automatically tracks the duration of your sleep and shows in the Polar Flow app and web service how restful your sleep has been.

Most adults do very well with eight hours of sleep, but sleep needs may vary from about six to nine hours. Your sleep needs are affected by several factors like individual characteristics, training load, mental stress, body’s condition and possible sleep debt.

By following your sleeping patterns you can see if they’re affected by any changes in your daily life and find the right balance of rest, daily activity and training.

An assessment of sleep quality relies on your wrist movements. The periods when you sleep peacefully and don’t move a lot are calculated as restful sleep. The periods when you move and change your position are calculated as restless sleep.

Train for a running event with a personalized and adaptive running plan in Polar Flow. Choose one of four events, 5K, 10K, half marathon and marathon, and get a comprehensive training plan that fits you and your goals.

Depending on your choices and activity levels, you will receive a personal running program that can range from 9 to 15 weeks in length. Running Program also offers a base-building phase that can work for months before the start of the actual running plan.

Running Program gives you easy-to-follow instructions, motivational guidance and supportive exercises with video instructions that take the guesswork out of training.

During individual training sessions, compatible Polar products guide you in real-time. You can see your target heart rate zone and target duration and adjust your training for optimal results.

Measure your speed and distance from the movement of your wrist. Use running related sport profiles or walking and let the accelerometer track your distance and speed - indoors and out.

For accurate readings, remember to specify your handedness and other physical settings.

In Polar wrist-based heart rate measurement heart rate monitoring is integrated into a device that can be worn on your wrist. It enables you to quickly and easily check your heart rate by entering training mode in your device. It measures your heart rate accurately and easily, and gives training guidance on how to train at the right intensity. The Polar wrist-based heart rate measurement is based on Polar proprietary optical heart rate module to give the best possible results, with an emphasis on both design and functionality.

One of the key factors in wrist-based heart rate measurement, in ensuring an accurate reading from a wrist-based device, is ensuring a proper fit. The watch should sit behind the wrist bone, with the back of the watch fitting snugly against your wrist, but obviously not so tight as to prevent blood circulation or feel uncomfortable.

Heart rate (HR) is an excellent measure of exercise and your training intensity. In the human body heart rate is regulated to match the demands of the body and the environment. When exercise intensity increases, heart rate also increases to match the increased rate of energy expenditure and oxygen uptake.

Heart rate can be expressed as the absolute number of beats per minute (bpm) or as a percentage of your maximum heart rate (% HRmax) or heart rate reserve (% HRR).  Absolute heart rate during training is not very informative on its own, but when it’s expressed and interpreted in relation to HRmax or HRR it determines individual exercise intensity.

Your heart rate value in beats per minute (e.g. 125 bpm) is individual and cannot be compared to another person's value. A percentage of your maximum heart rate value on the other hand is comparable. For instance your friend may have a higher heart rate value in bpm, but the percentage of your individual HRmax can be the same. This means that you have the same relative training intensity.

Maximum heart rate (HRmax) is the highest number of heart beats per minute (bpm) during physical exertion. HRmax is individual and may somewhat decrease as you age. It sets the individual reference value for your training intensity and is used in the calculation of the default heart rate zones and many Polar Smart Coaching features.

An age-based HRmax is a rough estimate of your maximum heart rate, and it is used as default in most Polar training computers. The most reliable and safest way to determine your HRmax is to have it measured in a maximal laboratory test.

Provide an easy way to adjust and monitor the intensity of your training. By using hear rate zones you can also follow heart rate-based training programs. The default zones are based on your HRmax.

Different training intensities have different training benefits, for instance light intensity enhances basic aerobic endurance and hard intensity improves your body’s ability to sustain high intensity exercise and your maximal oxygen uptake.

The default heart rate zones are divided into five intensity zones based on the percentage of your maximum heart rate:

1. Very light (50–60% HRmax)
2. Light (60–70% HRmax)
3. Moderate (70–80% HRmax)
4. Hard (80–90% HRmax)
5. Maximum (90–100% HRmax)

You can define the zone limits yourself as you want. More detailed information about this can be found in the Polar Flow web service.

A moving symbol in zone display in your training computer showing whether you are inside the pre-set or desired target zone. This feature helps you to reach the desired intensity/pace/speed targets.

Estimates your aerobic fitness at rest without any exertion in just five minutes. The result, Polar OwnIndex, evaluates your maximal oxygen uptake (VO2max) and tells on what aerobic fitness level you are compared with people of the same age and gender.

The test is based on resting heart rate, heart rate variability, gender, age, height, body weight and your self-assessment of the level of long-term physical activity. You can compare your value to the population norms, the average values of people of the same age and gender.

Polar Fitness Test can motivate you to start, maintain or increase physical exercise. You will only need your training computer and a heart rate sensor.

To be able to follow the progress, the test should always be carried out under the same conditions, meaning at the same time of day, in a peaceful environment, and following a light training day or a day of rest.

H10 heart rate sensor required

Calculates the number of calories burned based on your individual data: your weight, height, age, gender, HRmax, HRrest, VO2max, and the intensity of your training/activity.

Heart rate-based calorie calculation is used when heart rate is measured, and it measures burned calories the most accurately also in conditions like cycling or lifting weights. Activity-based calorie calculation is used in training computers and activity trackers, when heart rate is not available.

You can see the cumulative energy expenditure (in kilocalories, kcal) during exercise and total kilocalories of the session after exercise. You can also follow your total daily calories.

Helps you to understand how each training session benefits your fitness. It also gives you motivating feedback immediately after exercise. With the Training Benefit feature, you can make your training more varied by altering your training intensity and duration.

The Training Benefit feedback is based on exercise intensity and duration. It reads into how much time you spend and how many calories you burn in each intensity zone. You get a quick overview after each session and for more detailed feedback, you can either check your training file from your training computer or later in the Polar Flow app or web service.

Allows you to choose the sport relevant for your training from over a hundred Polar sports with sport-specific reports. You can get the most valuable information for you from your chosen sport.

All sport profiles are based on certain logic and the most common (endurance) sports are enhanced with Polar-specific multipliers affecting calorie and training load calculation.

You can choose and adjust your own favorite sports and define specific settings for each one in Polar Flow. In more advanced training computers you can get tailored views during your training and choose what data you want to follow during training, for instance heart rate or just speed and distance.

When you train outdoors and bring your phone with you, your speed, distance and route are tracked with your phone’s GPS. In order for this feature to work, make sure that your phone is getting a GPS signal and that the Bluetooth connection between your phone and wrist unit is working.

Stores your recent training files. Memory capacity and number of stored training files varies according to training computer and what and how much data is included in files (e.g. heart rate, GPS). Certain languages also affect the memory capacity.

With the heart rate sensor mode you can use your wrist unit to track your heart rate and transfer live heart rate data to other Polar products, such as cycling computers, or to compatible gym equipment, apps and other devices via Bluetooth.

Weight: 31,7g (S), 37,3g (M/L)

Resolution: 80 x 160

WR30

micro USB

15

Connects your Polar device and possible sensors to each other and enables you to sync your data via mobile. It is a standardized, wireless communication technology that is optimized for low power consumption and based on an open platform.

Once paired, the Bluetooth Smart sensor is automatically locked to transmit data to your training computer. The training computer picks up your data from your transmitter only.

Allows you to stay up to date when wearing your training computer in your everyday life. You will receive alerts from incoming calls, messages and push notifications from social media apps and see them on the display of your training computer.

During training you can see who’s calling and decide if you want to pick up or keep on enjoying your workout.

You can define which notifications you wish to receive in your phone’s settings or turn off notifications altogether from your training computer.

Keeps the buttons of your training computer safety locked avoiding any undesired accidental presses.

Allows you to update the software to the latest version with a USB.

Offers an easy way to follow your training, activity and progress in the Polar Flow web service. You can see your data in a daily, monthly or weekly view.

The Diary data includes e.g. completed training sessions and plans, test results and your daily activity.

Be a part of the Polar training community and meet other Polar trainers there. You can share your own achieves, like training sessions or activity summaries or you can follow and comment other trainers´ training session or activity summary.

Gives you an instant, visual summary of one training session or your activity in the Polar Flow app. You can follow your activity in daily, weekly or monthly view.

Allows you to easily analyze every detail of your training and long-term physical activity in the Flow web service. You can also get a deeper insight into your training analyses, for example compare your heart rate against speed, view detailed lap information or analyze your performance related to the route.

Besides the many details you get about your physical activity and all the health benefits that come with it, you can also get practical guidance how to reach your Activity Goal and see your inactive periods.

Create detailed training targets in the Flow web service. You can save them to your training diary or as favorites for later use and sync them to your training computer.

You can set for example calorie, time or distance based targets or phased heart rate or speed/pace based targets. With your training targets you can ensure that you gain the desired training effect.

During training you can easily follow the guidance on your training computer and get notification with relevant information on the display with audio or vibration alert.

After your training session you can make a deeper analysis in the Polar Flow web service how you succeeded compared to your target

Allows you to choose the sport relevant for your training from over a hundred Polar sports with sport-specific reports. You can get the most valuable information for you from your chosen sport.

All sport profiles are based on certain logic and the most common (endurance) sports are enhanced with Polar-specific multipliers affecting calorie and training load calculation.

You can choose and adjust your own favorite sports and define specific settings for each one in Polar Flow. In more advanced training computers you can get tailored views during your training and choose what data you want to follow during training, for instance heart rate or just speed and distance.

Offers you a practical tool to follow your development with reports and graphs over longer periods. In Week, Month and Year reports you can choose the sport you want to include to the report. In Custom period you can choose both the period and the sport.

Compatible with PC Windows XP, Windows 7, Windows 8, and later

Compatible with Mac OS X 10.6, OS X 10.7, OS X 10.8, and later

Compatible with Polar Flow web service via USB

Compatible with Polar Flow mobile app via Bluetooth Smart

Allows you to manually export data of your training session to third party apps and services as TCX, GPX or CSV files. You can also zip the files for faster download.

E.g. you can export a specific route in GPX format or a training session including key training data like route, heart rate, calories and cadence in TCX format.

You can transfer the training results and fitness test results from polarpersonaltrainer.com to Polar Flow with the following Polar products: RCX3, RCX5, RC3 GPS, CS500, CS500+, RS300X, RS800CX, CS600X, FT80, FT60, FT40 and FT7. It’s possible to transfer either a single training or fitness test result or up to 25 results at a time.

Log into Polar Flow with your polarpersonaltrainer.com username and password. The training and fitness test results are transferred from your polarpersonaltrainer.com account to the corresponding account in Polar Flow (the account with the same username and password). Note that you can’t choose the account you transfer the results to.

Offers an easy way to connect your Polar training device with 3^rd party services.

Your training and daily activity details are automatically sent and available to be used in the services where you allow it. Now you can be connected for example with Strava, TrainingPeaks, Apple Health Kit, Google Fit, MyFitnessPal and MapMyFitness,

Polar is actively developing new 3^rd party compatible services and will update the information constantly.