Body measurement features
Automatic age-based target zone - bpm / %
Average and maximum heart rate of each lap
Average and maximum heart rate of training
Heart rate - bpm / %
HR-based target zones with visual and audible alarm
HRmax (age-based)
HRmax (user set)
Manual target zone - bpm / %
Polar Fitness Test
Polar OwnCal(R) - calorie expenditure
Polar OwnCode(R) (5kHz) - coded transmission
Polar OwnZone(R) - personal heart rate zone
Polar sport zones

Data transfer
Compatible with PC and Mac (Intel-based) via Polar FlowLink
Compatible with polarpersonaltrainer.com via Polar FlowLink

Polarpersonaltrainer.com features
Training analyzing
Training diary
Training Load
Training programs

Recording features
Training files (with summaries) - 16
Totals
Weekly history

Training features
Interval trainer guided workouts - heart rate / pace / distance
Number of laps - 99
HeartTouch - button-free operation of wrist unit
Graphical target zone indicator
Automatic lap recording
Display zoom
Time and distance based interval timers
ZonePointer
ZoneLock
User configurable displays - two lines

Watch features
Backlight
Date and weekday indicator
Display text in English, German, French, and Spanish
Dual time zone
Button Lock
Low battery indicator
Time of day (12/24h) with alarm and snooze
Water resistant - 50m (164 ft)

Polar RS300X Training Computer
Polar WearLink(R)+ Transmitter
RS300X User's Manual