The RS300X Heart Rate Monitor by Polar. For recreational athletes who require all essential heart rate and timing features.

FEATURES of the RS300X Heart Rate Monitor by Polar

• Helps you to train at the right intensity with personal training zones
• Displays how many calories you've burned
• Tracks your latest 16 training sessions and your last 16 weeks of training
• Transfers training data to polarpersonaltrainer.com with optional Polar FlowLink

• Automatic/Manual target zone (% / bpm / HRR%)
• Backlight
• Display zoom
• Easy start (setting wizard)
• Event Countdown Timer
• Graphical target zone indicator
• Heart rate (displayed as % of maximum heart rate)
• Heart rate (displayed as bpm)
• HeartTouch, button-free operation of wrist unit
• KeyLock
• Over-sized display
• User configurable displays
• Visual and audible alarm in target zones
• Water resistant - 50m
• Two lines

• Bike mount - optional

• Compatible with polarpersonaltrainer.com with Polar FlowLink

• Battery type - optional
• Full power mode (up to 30 hours with an optional lithium battery) - optional
• Low battery indicator - optional
• Low power battery mode - optional
• SIRF-III chipset - optional
• Shock resistant - optional
• Speed and Distance - optional
• WAAS support (wide area augmentation system) - optional
• Water resistant - optional

• Display text in English, German, French and Spanish

• Automatic lap recording - optional
• Average heart rate of each lap
• Average heart rate of total exercise
• Exercise Date
• Exercise Set (extended exercise profiles)
• HR-based target zones with audible alarm - 3
• HR-based target zones with visual alarm - 3
• HRmax (Polar Fitness test-based)
• HRmax (age-based)
• Interval trainer (HR, pace, distance) guided workouts
• Maximum heart rate of each lap
• Maximum heart rate of total exercise
• Number of laps - 99
• Polar Fitness Test with OwnIndex
• Polar OwnCal
• Polar OwnCode (5kHz)
• Polar OwnZone
• Polar sport zones
• Speed-based target zones with visual and audible alarm - optional
• Wireless ECG accurate heart rate
• ZoneLock
• ZonePointer

• Average heart rate
• Calorie expenditure - exe.total
• Exercise Time (total)
• Exercise file info page with date and time
• Lap info
• Last OwnIndex
• Maximum heart rate
• Number of exercise files (with summaries) - 16
• Target zone limits
• Time in target zone

• Distance summaries - optional
• G1 GPS Sensor - optional
• Run Distance - optional
• S1 foot pod - optional
• Speed displayed in pace, or kmph/mph - optional
• Speed/Pace and Distance - optional
• Speed/Pace summaries - optional
• Speed/Pace target zones - optional
• Target pace - optional
• Target pace alarms - optional
• Time and Distanced based interval timer - optional
• Totals mileage, kilocalories, time training - optional
• Trip Odometer - optional

• WearLink + 31 coded transmitter (changeable battery)

• Alarm with snooze
• Date and weekday indicator
• Dual time zone
• Low battery indicator
• StopWatch
• Time of day (12/24h) with alarm

• Manual
• Polar RS300X
• Polar WearLink + transmitter