The CS300 is the optimum choice for cyclists who like to get their cardio fitness from sports other than just cycling. Its versatility means you can either wear the CS300 wrist unit during indoor fitness training or mount it onto your bike when cycling.

• Measures your current, average and maximum speed
• Shows you how many calories and the percentage of fat you've burned
• Get guidance for optimal training intensity based on your body's daily condition
• Use polarpersonaltrainer.com as your training log to analyze your long term progression and improvement

• Heart rate (displayed as bpm)
• Heart rate (displayed as % of maximum heart rate)
• Automatic/Manual target zone (% / bpm / HRR%)
• Visual and audible alarm in target zones
• Water resistant - 50m
• Backlight
• HeartTouch™, button-free operation of wrist unit
• Easy start (setting wizard)
• Over-sized display
• User configurable displays
• Sound volume level setting
• Double antenna (longer range, less disturbance)
• KeyLock

• Transfer exercise data from wrist unit to polarpersonaltrainer.com via Polar WebLink (SonicLink/Infrared)
• Transfer logos from Polar web site to wrist unit (UpLink)
• Edit wrist unit settings with Polar UpLink Tool and transfer them to your Polar product (UpLink)

• Trip
• Distance
• Odometer (1/2 and total)
• Speed (current, average and max)
• Wheel size settings for two bicycles
• Bike mount
• Speed sensor - wireless
• Cadence sensor - opt. wireless
• Estimated Time of Arrival
• Graphical comparison of two values
• Calorie consumption rate/hour
• Calorie consumption rate/km
• Autostart/stop
• Automatic display scroll
• Speed sensor installation for different fork shapes

• SonicLink (PC with a sound card and microphone required)
• UpLink (PC with a sound card and headphones/dynamic loudspeakers required)

• Display text in English, German, French, Spanish and Italian

• Wireless ECG accurate heart rate
• Polar OwnZone®
• Polar OwnCal®
• Polar Fitness Test™ with OwnIndex®
• Polar OwnCode® (5kHz)
• HR-based target zones with visual alarm
• HR-based target zones with audible alarm
• Cadence-based target zones with visual and audible alarm
• Exercise Set (extended exercise profiles)
• HRmax (Polar Fitness test-based)
• HRmax (age-based)
• Interval timers
• Maximum heart rate of total exercise
• Average heart rate of total exercise
• Number of laps
• Exercise Date
• ZonePointer

• Number of exercise files (with summaries) - 14
• Exercise file info page with date and time
• Exercise Time (total)
• Time in target zone
• Target zone limits
• Average heart rate
• Maximum heart rate
• Last OwnIndex
• Calorie expenditure (Exercise/Weekly/Total/Fat%) - exe.total
• Weekly history
• Distance (total)

• T31 coded™ transmitter - compatible
• WearLink® 31 coded transmitter (changeable battery) - compatible
• WearLink® + 31 coded transmitter (changeable battery)

• Time of day (12/24h) with alarm
• Dual time zone
• Date and weekday indicator
• StopWatch
• Exercise reminder (visual/alarm)
• Low battery indicator
• Alarm with snooze