RS300X
Sports Watch

Monitor Heart Rate, Speed and Distance

For recreational athletes who require all essential heart rate and timing features.

RS300X
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At a glance

For recreational athletes who require all essential heart rate and timing features.

  • Helps you train at the right intensity with personal sport zones
  • The Polar Fitness test measures your aerobic fitness at rest and tells you your progress
  • Displays calories burned

Smart Coaching Features

  • Fitness Test

    Fitness Test

    Tells you exactly how your fitness is developing.

  • Training Load and Recovery

    Training Load and Recovery

    Helps you find the perfect balance between rest and training.

  • OwnZone

    OwnZone

    Guides you to train at the right intensity.

  • Smart Calories

    Smart Calories

    Lets you know exactly how many calories you’ve burned.

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Videos

RS300X Smart Coaching Features

  • Fitness Test

    Fitness Test

    Tells you exactly how your fitness is developing.

    If you’re looking to improve your fitness and want to keep up to date with how well you’re doing, the smart Fitness Test will tell you exactly what you need to know in just five minutes. By regularly comparing your test results, you can see what progress you are making and how your fitness is improving.

    What does aerobic fitness mean?OwnIndex tableWhat is Fitness Test based on?
  • Training Load and Recovery

    Training Load and Recovery

    Helps you find the perfect balance between rest and training.

    Shows you how much your training affected your body and how long it takes for you to recover. Continuous monitoring of training load and recovery will help you recognize personal limits, avoid over- or undertraining, and adjust training intensity and duration according to your daily and weekly targets.

    Training Load in polarpersonaltrainer.com
  • OwnZone

    OwnZone

    Guides you to train at the right intensity.

    Knowing the right intensity to improve fitness can be a challenge. By using the OwnZone, you can be sure your training on an intensity that improves your aerobic fitness as the feature adjusts your heart rate training zone to perfectly match your body’s current physiological condition.

    Tip for using OwnZone feature
  • Smart Calories

    Smart Calories

    Lets you know exactly how many calories you’ve burned.

    OwnCal is the most accurate calorie counter on the market. It calculates the number of calories expended during a training session based on your weight, height, age, gender, your individual maximum heart rate (HRmax) and how hard you’re training.

    Calorie calculationTip for using OwnCal
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User testimonials

It was worth every penny of it! -Jay

It took me months after long & hard of thinking before I finally decided to buy Polar RS 300X SD, $ 383.00 to be honest, at first I thought the price is quite steep, specially nowadays. I'm just after to find out the accuracy of the distance of the running event/s distance/s that I participate in. But, after finding the other features that Polar RS 300X SD has, Heart Rate Monitor that tells you if you are pushing your (heart) yourself to the limit. Distance, Speed, My previous training run/s, etc... It was worth every penny of it! I almost bought other brands timing devices because of its prices if I did, for sure I wouldn't be this very satisfied & very happy of what I have. Besides, Polar is the pioneer in HRM (Heart Rate Monitor)and it is the most preferred computer training being used worldwide whether in running, cycling, etc.... whether your an athlete or not. They say who have already owned Polar they have been using it for many many years now! That'! s what I call very wise investment!

Added value for your training goals

I've been using the RS300x for 2 months now and I'm very very happy about my purchase. Yes it was a bit pricy, but my ability to target the HR zones I need to work at, monitor my speed while racing or training -to know if I'm on taget or not- are major improvements.Numbers ARE a great motivator for me, and eventhough I'm not a pro, I beleive I'm serious enough that I need the feed backs this watch gives me. It is easy to use and the footpod which appeared enormous at first glance, is totally forgotten once you start running. all in all this is a very reliable, acurate tool that will be an added value for your training goals.

The best of both worlds -Hugh Mabon

my two main pieces of hardware are my macbook pro and my polar RS300X watch. i have used mac since 1984 and polar since i really started running in the year 2000. unfortunately i had to switch to one of polars competitors to analyze my data until this watch came along. the flow link is amazing - just as i always wanted data synchronization to be. now i have the best of both worlds. thank you polar.

Simple to use, simple to setup, easy to read and to operate on-the-go

I use it for nearly a yaer for running and nordic walking and I love it.Simple to use, simple to setup, easy to read and to operate on-the-go - even wearing gloves.I use the OwnZone feature more often than Polar suggests - it optimizes the strenght of my training to my actual condition. As I work sometimes long hours and travel a lot in the car, I sometimes find myself shocked when OwnZone showes me much worse shape of my body than I personally realize. It's very useful. I never felt exhausted as long as I stayed within the limits given by this monitor.The other feature I love is ZoneLock - with one touch of a butto you can lock the sport zone of your choice (for fat-burning, strenght building or speed) and the monitor will keep you in it sending signals. Again - very useful.I can only recommend it as a great product!

I would not even consider purchasing another brand monitor

I have been using Polar RS200 HRM with foot pod for about three years now. The data has been very accurate, and I have seen an improvement in all of the sports I participate in. I recently upgraded to the new 300 GPS unit, and I am eagerly waiting to put that unit to the test. Polar has been a great company (possibly because they are Finnish and so am I)and their technology is top notch. I would not even consider purchasing another brand monitor and will continue to be a loyal supporter. Kiitos Polar!

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