The Polar S725X  is a great selection for serious cyclists and triathletes. The S725X records your heart rate, altitude, and speed and distance while cycling. If you add the S1 footpod device, it also monitors your speed and distance while running. The Polar S725X box includes the heart rate monitor, soft Wearlink chest strap, and cycling speed sensor. To collect running data, add an S1 footpod (sold separately). If you wish more cycling data, cadence (sold separately) and power sensors (optional) are also available for the S725X.

Polar exercise features    

     Wireless ECG accurate heart rate     

     Exercise Set (extended exercise profiles)  5   

     Polar OwnCal     

     Polar Body Workout      

     Target zones with visual alarm  3   

     HR max (age-based)     

     Interval timers     

     Maximum heart rate of total exercise     

     Average heart rate of total exercise     

     Minimum heart rate of total exercise      

     Average heart rate of each lap     

     Maximum heart rate of each lap     

     Recovery measurement (HR / time)     

     Altitude and ascent     

Running features    

     Speed/Pace and Distance  opt.   

     Speed displayed in pace, or kph/mph  opt.   

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   

     Calorie consumption rate/hour      

     Calorie consumption rate/km      

     Auto start/stop      

     SpeedPointer      

     Automatic display scroll      

Altimeter features    

     Altitude with graphical trend    available via PC software   

     Vertical speed (ascent and descent rate); ave. and max.      

Mobile connectivity    

     Polar MobileLink

Computer connectivity    

     Transfer exercise data from wrist unit to Polar Personal Trainer

     web service via Polar WebLink (SonicLink/Infrared)     

     Compatible with Polar Precision Performance analysis software

Watch features    

     Time of day (12/24h) with alarm     

     Dual time zone     

     Date and weekday indicator     

Language features    

     Display text in English      

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

Transmitter belt     

     Polar WearLink 31 coded transmitter (changeable battery)