The Polar S725X is the most trusted heart rate monitor-based training tool among professional cyclists. It is the only complete cycling system that combines heart rate with speed, distance, altitude, ascent, cadence and optional power output. It features also mobile connectivity and Polar OwnOptimizer recovery test. For multi-sports training running speed and distance can be measured with the optional Polar S1 Foot Pod.

Cycling features
Trip
Distance
Distance based interval
Distance based recovery measurement
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
Polar Power Output Sensor™ opt. wired
Estimated Time of Arrival (ETA)
Graphical comparison of two values
Calorie consumption rate/hour
Calorie consumption rate/km
Autostart/stop
SpeedPointer
Automatic display scroll
Multifunctional handle bar/stem installation
Speed sensor installation for different fork shapes
Temperature and altitude