Polar CS300

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At a glance

For fitness cyclists who want to wear their training computer on the wrist or on the bike mount.

Measures heart rate combined with current, average and maximum speed
Determines daily personal heart rate target zones for optimal training
The Polar Fitness test measures your aerobic fitness at rest and tells you your progress
Connects to your online training diary at polarpersonaltrainer.com

›Smart Coaching Features

Fitness Test
Tells you exactly how your fitness is developing.
Training Load
Helps you find the perfect balance between rest and training.
OwnZone
Guides you to train at the right intensity.
Smart Calories
Lets you know exactly how many calories you’ve burned.

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› CS300 Smart Coaching Features

Fitness Test
Tells you exactly how your fitness is developing.
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.
Training Load
Helps you find the perfect balance between rest and training.
Training Load helps you to find the perfect balance between rest and training. Find out your training load status at polarpersonaltrainer.com. It shows you at a glance your cumulative training load for every day, advising if and when rest days are needed and when it’s best to train harder in order to maintain your performance improvement.
OwnZone
Guides you to train at the right intensity.
Knowing the right intensity to improve fitness can be a challenge. By using the OwnZone, you can be sure your training on an intensity that improves your aerobic fitness as the feature adjusts your heart rate training zone to perfectly match your body’s current physiological condition.
Smart Calories
Lets you know exactly how many calories you’ve burned.
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.

Body measurement features

Automatic age-based target zone – bpm / %
To help you train safely and effectively, the training computer determines your heart rate target zone limits automatically according to your age-based maximum heart rate (220 minus age). The limits are determined either in beats per minute (bpm), as a percentage (%) of your maximum heart rate, or as a heart rate reserve (% HRR). See also Maximal oxygen uptake (VO2max) and Manual target zone.
Average and maximum heart rate of training
Heart rate – bpm / %
Heart rate is the measurement of the work your heart does. Heart rate can be expressed as the number of beats per minute or as percentage of your maximum heart rate. Heart rate can also be expressed as a percentage of your heart rate reserve, meaning the difference between your resting heart rate and maximum heart rate (HRR = HRmax - HRrest). In Polar software or during strength training, heart rate can be displayed as a graphical trend.
HR-based target zones with visual and audible alarm
You can define your target zones for a training session based on heart rate to help define the right intensity. When you are out of the preset zones, the training computer will give a visual and audible alarm.
HRmax (age-based)
The highest number of heart beats per minute (bpm) during maximum physical exertion. For a rough estimate of your maximum heart rate, subtract your age from 220. HRmax is a useful tool for determining the intensity of training as intensity zones can be defined using HRmax. Some Polar products define maximum heart rate during the Polar Fitness Test, see also HRmax (Polar Fitness Test -based).
HRmax (Polar Fitness test-based)
Some Polar products predict your HRmax simultaneously with the Polar Fitness Test. This predicted HRmax value is more accurate than the age-based formula (220 minus age).
HRmax (user set)
Manual target zone – bpm / %
This feature enables you to define the target zone as you want and is suitable for your training. You can set the target zone for your training as beats per minute (bpm), as a percentage of your maximum heart rate, or as a percentage of your heart rate reserve (HRR%).
Polar Fitness Test
Polar Fitness Test measures your aerobic fitness at rest in just five minutes. The result, Polar OwnIndex, evaluates your maximal oxygen uptake (VO2max). With the Polar Fitness Test you can measure your aerobic fitness by yourself, automatically and without any exertion. All you need is your training computer. The Polar Fitness Test is as accurate in predicting the VO2max as any sub maximal fitness test. The test is based on heart rate and heart rate variability at rest and personal information.
Polar OwnCal® – calorie expenditure
Polar OwnCal calculates the number of kilocalories expended during training. This feature allows you to follow the kilocalories expended during one training session and cumulative kilocalories expended during several training sessions. Some Polar products also estimate the fat-burning percentage (fat% on display), that is, kilocalories expended from fat during a workout which is expressed as a percentage of the total kilocalories burned.
Polar OwnCode® (5kHz) – coded transmission
Coded heart rate transmission automatically locks in a code to transmit your heart rate to the training computer. The training computer picks up your heart rate from your transmitter only. Coding prevents interference from other training computers.
Polar OwnZone® – personal heart rate zone
Polar OwnZone® determines your personal heart rate limits for a training session. Depending on the day and time, your physical state may vary, for instance, if you are stressed or tired, or if you are not fully recovered from your latest training session, Polar can determine that information from your heart rate and guide you to your ideal training zone for that moment.

CS cadence sensor features

CS speed sensor features

Data transfer

Polarpersonaltrainer.com features

Recording features

Training features

Watch features

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Polar CS300

Polar CS300 cycling computer
Polar WearLink®+ transmitter
Polar CS speed sensor
Polar Universal Bike Mount
Getting Started Guide

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Customize

With accessories you can upgrade your training computer to enhance your experience and achieve a more complete understanding of your performance

Want to know your cadence?
Add a CS cadence sensor to improve your cycling technique and efficiency by measuring your real time and average pedaling rate.

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CS300

Cycling and Cross-Training

At a glance

›Smart Coaching Features

Fitness Test

Training Load

OwnZone

Smart Calories

› Images

› CS300 Smart Coaching Features

Fitness Test

Training Load

OwnZone

Smart Calories

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Customize

Want to know your cadence?

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