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Polar RS300X Heart Rate Monitor - Men's

The attractive and simple-to-use Polar RS300X heart rate monitor improves your fitness results by helping you train at the optimum intensity.
  • $129.95

Item # 793103

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  • Included Polar WearLink®+ 31 transmitter chest strap accurately measures your heart rate; transmitter is coded, eliminating interference from other heart rate monitors
  • Polar OwnZone® feature determines an individual training zone and guides you through an appropriate warm-up routine based on your current physical condition
  • Watch offers average and maximum heart rate during total exercise time; includes time spent in target zone
  • Visual and audible alarm alerts you every time your heart rate exceeds the upper limit or falls below the lower limit of your target zone
  • RS300X displays how many calories you've burned during your workout
  • Tracks your latest 16 training sessions and your last 16 weeks of training
  • Event countdown timer keeps you motivated by showing how many days remain until race day (e.g. Boston 21 days)
  • Watch features include time of day with alarm and snooze, dual time zone, date and weekday indicator, stopwatch and low-battery indicator
  • Display text in English, German, French or Spanish
  • Water resistant to 164 ft. (50m)
  • CR2032 Battery included
  • Add the Polar S1 Foot Pod™ and G1 GPS sensor (both sold separately) so you can track speed and distance during your workouts
  • Transfer training data to with the optional Polar FlowLink™ (sold separately)


Polar RS300X Heart Rate Monitor - Men's

Specification Description
Best use Cross-training
Analog or Digital Digital
Heart rate sensor type Chest strap
Heart rate target zone(s) Yes
Time in target zone Yes
Average heart rate Yes
Recovery heart rate mode No
Tracks calories burned Yes
Speed/distance Optional
Exercise log No
Wireless communication No
OS compatibility Windows, Mac
Stopwatch Yes
Countdown timer No
Alarm Yes
Illumination Backlight
Time display Yes
Dimensions 1.6 x 1.6 inches
User replaceable battery Yes
Average battery life 1 year
Water-resistant depth 50 meters
Weight 1.3 ounces
Gender Men's

Polar RS300X Heart Rate Monitor - Men's

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Rated 2out of5
by fromgood watch, terrible after sale (wrist strap) The RS100, RS200 and RS300x black/orange models need to be returned to a Polar service centre for replacing and sealing as the wrist strap and case are a single component piece. I just call to the local dealer and they say that is too older so then can't do anything.
Date published: 2014-03-04
Rated 3out of5
by fromGreat features, wrist strap a dud This is the 2nd time I have had to send in my watch for service due to the wrist strap breaking. I have truly loved it but getting tired of sending it in for service just because of the wrist strap.
Date published: 2014-04-15
Rated 3out of5
by fromGreat Watch, Bad quality strap! I have had this watch for 3 years now, it has all the features I need to keep track of my workouts, my only complaint is the strap, which I have had to change twice because it keeps breaking.
Date published: 2014-08-27
Rated 4out of5
by fromNice feature, easy to use Make sure you wet the contacts on the chest band before putting on.
Date published: 2013-03-09
Rated 4out of5
by fromBest in class with a few drawbacks Been using Polar HR monitors since the early 90's so I'm a big fan and overall the RS300X is impressive, although I do have two gripes. The start/stop button doesn't always register when pressed - I've had dozens of runs where I hit the start button, only to get a mile or two into the run and realize it hadn't started the chronograph. The second frustration is that after a year of use my band has cracked and broken and the Polar's don't have replaceable bands.
Date published: 2011-05-22
Rated 4out of5
by fromTop Notch-Little Fluf I like a dependable/reliable product that gives me what I need without a lot of "extras". The RS300X is that type of product. The chest band is very sensitive; following Polar's recomendations to wash in a washing machine at least after every 5 uses is a must, otherwise readings on the monitor will be off the charts.
Date published: 2011-09-27
Rated 4out of5
by fromGreat Monitor, Not so good strap. I've used and abused this model for about 3 years. About a year in I noticed some cracking in the band. Another two years later it finally broke. I have owned several Polar monitors in the past and never had this problem. I also used the receiver as my everyday watch, and wore it nearly 24/7 (even in the shower). Overall this is a good training tool, with some great features and I feel is a great value in the Polar product line up. I'd be more upset about the band breaking if Polar wasn't so good with repair and customer service. I can't complain with that at all. As a matter of fact I'm replacing my old RS300X with a new RS300X thanks to Polar's trade in program. I plan to use it ONLY for training and not as my everyday time piece. Maybe it'll last a little longer that way.
Date published: 2014-06-18
Rated 5out of5
by fromgreat watch/ better than the suunto first off, this watch is the direct cross for the suunto t3c, but better. i went through three suunto's before i had enough and took the last one back. the rs300x works the same way, the functions are almost the same, just displayed a little different, and the polar,so far, is completely reliable. the chest strap on the suunto was designed by an idiot,while the strap for the polar is actually well thought out and wont continually break. and i wont feel worried if i get the watch wet either. the operating software inside the watch works almost identical to the t3c, except for the training effect. i will miss that function, but i can live with out it. all the rest of the functions are the same. over all i would highly recomend the polar rs300x. the best deal on the market.
Date published: 2009-11-13

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