Heart Rate Monitors Comparison

Polar Heart Rate Monitors Compare S - Series Models
S-Series
Polar Monitor	Polar S725X™	Polar S720i™	Polar S625X™	Polar S610i	Polar S410™	Polar S210™	Polar S120™
Polar exercise features	speed sensor included		foot pod included
Wireless ECG accurate heart rate
Exercise Set	5	5	5	5	5	5	1
OwnCal™
OwnIndex™
OwnCode
Target zones with visual and audible alarm		3		3	3	3	3
Target zone (% of max or bpm) with visual and audible alarm	3		3
HR max (Polar Fitness test-based)
HR max (age-based)
Interval timers
Independent CountDown / CountUp timer
Maximum heart rate of total exercise
Minimum heart rate of total exercise
Average heart rate of each lap
Maximum heart rate of each lap
Relaxation rate during exercise
Recovery measurement (HR / time)
Polar OwnOptimizer™
Altitude and ascent

Cycling features
Trip	optional		optional
Speed average and max	optional		optional
Distance based interval	optional		optional
Distance based recovery measurement	optional		optional
Wheel size settings for two bicycles	optional		optional
Bike mount	optional		optional	optional	optional	optional	optional
Speed sensor	optional	wireless	optional
Cadence sensor	optional	optional	optional
Power output sensor	optional	optional	optional
Temperature and altitude

Running features
Speed and Distance
Speed displayed in pace, or kmph/mph
Distance based interval trainer

Computer connection features
Two-way infrared data communication
SonicLink, exercise data download to SW
UpLink, settings upload from SW to HRM
Polar Precision Performance 4.0 analysis SW
Optional IR Interface (for RS 232 serial port or for USB port)

Recording features
R-R beat-to-beat recording
Number of exercise files	99	99	99	99	1:5	1:5	1
Online recording with optional Polar IR Interface
Training file info page with date and time
Exercise Time (total)
Time in target zone
Target zone limits
Average heart rate of total exercise
Last OwnIndex
Calorie expenditure

Basic features
Heart rate (% of max/bpm)
Automatic/adjustable HR limits
Water resistant	30m	20m	30m	50m	50m	50m	50m
Large digits
Backlight

Mobile connectivity
Mobile software availability

Watch features
Time of day (12/24h) with alarm
Dual time zone
Date and weekday indicator
Stopwatch
Exercise reminder (visual)
Exercise reminder (alarm)
Low battery indicator

Transmitter belt
Polar T31 transmitter
Polar T31 coded transmitter							compatible
Polar WearLink 31 coded transmitter		compatible		compatible	compatible	compatible	compatible
Polar T61 coded transmitter	compatible		compatible				compatible