sports & recreation

CS400 Advanced Cycling Training, 41g For demanding cyclists who require more advanced training capabilities.

- Measures heart rate combined with current, average and maximum speed
- Helps you train at the right intensity with personal sport zones
- Allows you to prepare detailed training programs with ease
- Comes with Polar ProTrainer 5 software for analyzing, planning, and keeping a training diary

Altimeter and barometer features
- Altitude, ascent and descent – meters, degrees, percentage
Altitude is measured with an atmospheric air pressure sensor. Altitude is shown as ascended and descended meters/feet and uphill/downhill steepness in percentages and grades.
- Temperature

Body measurement features
- Automatic age-based target zone
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 each lap
- Average, minimum and maximum heart rate of training
- Heart rate – graphical trend
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
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.
- Polar sport zones
Polar sport zones provide an easy way to select and monitor the intensity of your training and to follow sport zones based training programs. Training is divided into five zones based on percentages of 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).

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
You can define your target zones for a training session based on cadence. When you are out of the preset zones, the training computer will inform you with a visual and audible alarm.
- Cycling Limits
This feature is useful for maintaining a certain level of intensity in your training. You can set upper and lower limits for heart rate, cadence, speed or power output. The training computer gives audible and visual alarms if your cycling rate goes out of the preset range.

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.
- Cycling Limits
This feature is useful for maintaining a certain level of intensity in your training. You can set upper and lower limits for heart rate, cadence, speed or power output. The training computer gives audible and visual alarms if your cycling rate goes out of the preset range.
- Distance based interval
- Distance based recovery measurement
- 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.
- Incline Measurement
Incline measurement tells you the uphill or downhill inclination in numerical form, helping you to adjust cycling effort accordingly. The feature shows you the uphill/downhill steepness in percentages and grades.
- Speed – current, average and maximum
Speed (km/h or mi/h) is measured with GPS, footpod, stride sensor or cycling speed sensor.

Data transfer
- Compatible with Polar ProTrainer 5 software – opt. with IrDA USB Adapter
- Compatible with polarpersonaltrainer.com – opt. with IrDA USB Adapter

Recording features
- Adjustable recording rate 1s, 5s, 15s, 60s
The samples of your heart rate, speed, cycling cadence, power and altitude are stored either in 1, 2, 5, 15 or 60 second intervals. A longer interval gives you more recording time, while a shorter interval allows you to record more detailed data. A shorter recording rate uses the memory of the training computer up more rapidly, but enables more accurate data analysis using Polar software.
- Totals
Totals includes your training data starting from the last reset enabling you to follow your long-term training.
- Training files (with summaries) - 99
- Weekly history
Weekly history gathers your weekly training data. By selecting a week, you can review your training data for the week.

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.
- Automatic lap recording
With this feature you can set your training computer to take laps based on preset distance, for example, every 1 km/mi.
- Display zoom
Display zoom feature allows you to zoom in information on the display during training.
- 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 .
- Graphical target zone indicator
This feature points out graphically on the display the zone you are in during a training session helping you to stay on the desired intensity zone.
- Interval trainer guided workouts heart rate / pace / distance
Create interval guided workouts based on time, heart rate, speed/pace or distance guidance with up to three linked timers or distances and up to three target zones.
- Number of laps - 99
- 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.
- ZoneLock
ZoneLock feature helps you to accumulate certain intensity. You can either lock a zone before a training session or during it by pressing a button when you are on the desired zone.
- ZonePointer
ZonePointer is a visible and moving symbol on the training computer display indicating whether you are inside the pre-set target zone. This feature helps you to reach the desired intensity/pace/speed/cadence targets.

Watch features
- Date and weekday indicator
- Display text in English, German, French, Spanish, and Italian
- KeyLock
By activating KeyLock, training computer buttons are locked, and accidentally presses do not cause problems, for instance, during training.
- Reminders
You can set reminders to alarm you of different tasks or training sessions, for instance, reminding you to drink during a training session.
- 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
- User replaceable battery
- Water resistant splash proof