Polar CS300 Black,Grey sport watch

CS300 Cycling and Cross-Training 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

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).
- 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

CS cadence sensor features
- Bike settings – for two bicycles
You can define settings up to two to three bikes in your training computer. When you start training, you can select the bike with the correct settings for that particular training session.
- Cadence – current, average and maximum
Your cycling cadence stands for your pedaling rate in revolutions per minute (rpm). Cadence is the central factor in improving cycling performance. A higher cadence reduces the force needed for each pedal stroke, and thus improves overall performance. Running cadence measures how many times your either right or left foot hits the ground in one minute. Running cadence is measured as steps per minute. With this feature you can sharpen your cadence and make your ground contact time shorter. This will help you to find a balance between leg power and leg speed.
- Cadence-based target zones with visual and audible alarm

CS speed sensor features
- Autostart/stop
By activating Autostart/autostop feature, the cycling computer starts and stops training recording automatically when you start or stop pedaling.
- Bike settings – for two bicycles
You can define settings up to two to three bikes in your training computer. When you start training, you can select the bike with the correct settings for that particular training session.
- Distance – training, lap, and total
Distance (km, mi) can be set and measured in several ways. Training distance tells you the distance traveled during a training session. Trip distance tells you the distance from the latest trip reset. Lap distance tells you the distance of one lap. Total distance is the distance accumulated since the last reset. Odometer tells you the cumulative distance which you cannot reset.
- Speed – current, average and maximum

Data transfer
- Compatible with polarpersonaltrainer.com – opt. with IrDA USB Adapter
- Edit wrist unit settings with Polar UpLink Tool and transfer them to your Polar product (UpLink)

Recording features
- Totals
Totals includes your training data starting from the last reset enabling you to follow your long-term training.
- Training files (with summaries) – 14

Training features
- Automatic display scroll
Automatic display scroll enables you to alternate between displays automatically during training without a need to remove hands from handle bars. Activating automatic display scroll improves riding safety and comfort.
- Graphical comparison of two values
This feature enables comparison of two values as graphs during training. For example, you can choose a graphical overview of your heart rate and altitude to see how altitude affects the intensity of your training .
- HeartTouch – button-free operation of wrist unit
When HeartTouch is on, different training information during training can be accessed without pressing buttons, for instance, when gloves make pressing buttons difficult, by bringing your training computer close to your transmitter.
- User configurable displays
This feature allows you to configure training computer displays to show the information that you need during your training session. Configure the displays either in the training computer or in ProTrainer 5 software.
- ZonePointer

Watch features
- Backlight
- Date and weekday indicator
- Display text in English, German, French, Spanish, and Italian
- Dual time zone
- Low battery indicator
- StopWatch
Stopwatch can be used for timing, for instance, recording lap times. In some products, StopWatch tells the total training time.
- Time of day (12/24h) with alarm and snooze
- Training reminder
- Water resistant – 50m