POLAR S720i - Manual (Page 107)

Display symbols
Indicates an ongoing heart rate measurement and flashes to the beat of
your heart.
Indicates there has not been heart rate reception for at least 5 seconds.
- - Indicates there is no heart rate reception. Bring the wrist receiver up to
your chest near the transmitter’s Polar logo.
The receiver starts looking for the heart rate signal again.
Options mode: indicates that you are setting the bike functions
Exercise mode: indicates that bike 1 or 2 is on.
File mode: indicates cycling information.
In the Time of day display the alarm is on.
Measure mode: beeps if you are exercising outside your target heart rate
zone. Fitness Test mode: sounds an alarm at the end of the fitness test.
Indicates the Interval Trainer.
Indicates continuous interval (Cont).
Exercise mode: indicates the heart rate above the target zone.
Exercise mode: indicates the heart rate below the target zone.
M 105