Get race day ready with the RS300X. It''s packed with essential running features to help you monitor your progress and maximize your training.
Helps you train at the right intensity with personal sport zones
Compatible with Polar speed and distance sensors (sold separately)
Polar Fitness test measures your aerobic fitness at rest and tells you your progress
Average and maximum heart rate of each lap
Automatic lap recording
Time and distance based interval timers
Water resistant – 50m (suitable for swimming)
Syncs to online training diary with FlowLink (sold separately)
A smart, intuitive training computer for runners and cross-training athletes, the Polar RS300X wrist heart rate monitor helps you to train at the right intensity with personal training zones. It's compatible with Polar's S1 foot pod and G1 GPS sensor (both separately available), enabling you to combine heart rate with speed and distance and truly make sense of your training. Committed runners will find the most value in the real-time pace and distance measurement of the S1 foot pod, while those who mix up their training regimen with cycling, inline skating, paddling, mountain biking or hiking will be best served with the speed and distance G1 GPS Sensor.
The RS300X enables athletes to train at the right intensity and improve their performance through core metrics such as heart rate, speed, distance, pace, and calorie burn. Advanced features include Polar's exclusive OwnZone feature for individualized zone training by heart rate or pace, a fitness test, and auto lap splits, which display average heart rate, pace and distance per lap. Athletes can easily review up to 16 past workout files to check their progress and ensure they're staying on track with their fitness or training plan.
Features include:
Heart rate displayed as percentage of maximum heart rate, BPM, and average heart rate of total exercise
Tracks your latest 16 training sessions and your last 16 weeks of training
Visual and audible alarm in target zones: Informs you every time your heart rate and/or speed/pace exceeds the upper limit or falls below the lower limit of your target zone during a training session.
Polar OwnIndex Fitness Test calculates aerobic fitness (comparable to maximal oxygen uptake, VO2max) providing a reference to base training intensity and measure improvement.
Polar OwnCal: Shows your energy expenditure during one exercise session as well as your accumulated kilocalories during several exercise sessions. Because the OwnCal tracks both the energy expenditure during one exercise session and the accumulated kilocalories during a longer time e.g. one week, it helps in achieving both short term and long term goals.
Time in Target Zone feature calculates the amount of total training time spent in your personal target zone. You can use this feature together with the Total Exercise Time to determine the effectiveness of your training program.
Number of laps - 99
Watch features: alarm with snooze, dual time zone, stopwatch
Compatible with Polar FlowLink (available separately)
Water resistant to 50 meters
Backlighting, display zoom
Event Countdown Timer: Keeps your motivation high by showing how many days are left before your next running event (e.g., Berlin 23 days).
Wristband Size : 8.5 “ . NOTE - Measurements taken from the LAST HOLE to the END OF RUBBER next to buckle (not from end to end).
Easy-to-use heart rate monitor guides you to train at the right intensity
Includes H1 heart rate sensor chest strap for continuous, accurate heart rate. Uses coded transmission to avoid cross-talk with other heart rate monitors nearby.
Built-in Fitness test helps you can track and monitor your fitness improvement
Displays accurate calories burned and records last 16 training sessions and your last 16 weeks of training
Compatible with S1 foot pod and G1 GPS Sensor for speed and distance (not included, sold separately)