F4
For disappearing calories
For you who want to get a fitter body by knowing how many calories you have burned. The small and simple F4 gives you accurate information and motivates you to reach your targets.
- See how many calories you have burned
- Get interference-free data with coded heart rate transmission
- Helps you keep the intensity you want
Compatible Accessories
- Sleeve Topper
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- Universal Bike Mount
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- T31 coded™ transmitter
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View all compatible accessories
Product Support
F4
- Automatic age-based target zone (% / bpm) - %/bpm
- Backlight - w/o backlight in the North and South America
- Graphical target zone indicator
- Heart rate (displayed as % of maximum heart rate)
- Heart rate (displayed as bpm)
- HeartTouch™, button-free operation of wrist unit
- KeyLock
- Manual target zone (% / bpm) - %/bpm
- Visual and audible alarm in target zones
- Water resistant - 50m
- Bike mount - opt.
- Average heart rate of total exercise
- Exercise Date
- Fitness Bullets (á 10 minutes in target zone)
- HR-based target zones with audible alarm
- HR-based target zones with visual alarm
- Polar OwnCal®
- Polar OwnCode® (5kHz) - non-coded in the North and South America
- Wireless ECG accurate heart rate
- ZonePointer
- Average heart rate
- Calorie expenditure (Exercise/Weekly/Total/Fat%) - exe.total
- Exercise Time (total) - total
- Maximum heart rate
- Number of exercise files (with summaries) - 1
- Target zone limits
- Time in target zone
- T31 coded™ transmitter - incl. in product set in other countries
- T31 transmitter - incl. in product set in the North and South America
- WearLink® 31 coded transmitter (changeable battery) - compatible