Polar RS300X Heart Rate Monitor Monitors at Road Runner Sports
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Polar RS300X Heart Rate Monitor Monitors

Polar RS300X Heart Rate Monitor

Item #CIU1022

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Product Description:

POLAR® RS300X HEART RATE MONITOR :: Personalize your training, optimizing your fitness so you can perform and feel at your best by using the Polar® RS300X Heart Rate Monitor as your trusted workout partner. Whether you're running, cycling, hiking or doing whatever gets your heart pumping, you'll always know whether you're training at the right intensity for you by utilizing this wrist heart rate monitor's personal training zones. Easily pre-set your personal zones and then measure your key heart rate stats, rest assured that the built in alarm and visual alert will let you know when you've gone out of your optimal training zone. Plus, you'll be able to set goals and track your progress over time by seamlessly transferring your data to your Mac, PC or mobile device. And, feel free to get wet in this wrist heart rate monitor because it's also water-resistant up to 50 meters.

Your VIP savings apply! Monitor prices are too low for additional discounts to be combined.

Features & Benefits:

  • Helps you train at the right intensity with personal sport zones
  • Measures your aerobic fitness at rest and tells you your progress
  • 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: Define your target zones for a training session based on heart rate to help define the right intensity
  • HRmax (age-based): A useful tool for determining the intensity of training as intensity zones
  • HRmax (user set)
  • Manual target zone - bpm / %: enables you to define the target zone as you want and is suitable for your training
  • Polar Fitness Test: Measures your aerobic fitness at rest in just five minutes
  • Polar OwnCal - calorie expenditure: Calculates the number of kilocalories expended during training
  • Polar OwnCode (5kHz) - coded transmission: Coding prevents interference from other training computers
  • Polar OwnZone - personal heart rate zone: Determines your personal heart rate limits for a training session
  • Polar sport zones: Provides an easy way to select and monitor the intensity of your training and to follow sport zones based training programs
  • Training load - available via polarpersonaltrainer.com: Allows you to follow your training load and recovery in a training diary
  • Data transfer: Compatible with Mac (Intel-based), PC, and polarpersonaltrainer.com via Polar FlowLink
  • Automatic lap recording
  • Display zoom
  • Graphical target zone indicator
  • Heart Touch - button-free operation of wrist unit
  • Interval trainer guided workouts - heart rate/pace/distance
  • Number of laps - 99
  • Time and distance based interval timers
  • User configurable displays - two lines
  • ZoneLock: Helps you to accumulate certain intensity
  • ZonePointer: A visible and moving symbol on the training computer display indicating whether you are inside the pre-set target zone
  • Backlight
  • Date and weekday indicator
  • English, German, French and Spanish text
  • KeyLock
  • Time of day (12/24h) with alarm and snooze
  • Water resistant - 50m
  • Includes: Polar RS300X training computer, H1 heart rate sensor and Getting Started guide
Product CIU1022 Review

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  • Get help with your order or finding a product
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Shipping Information

Shipping Information

VIP! Your order means the world to us.

WOW, VIP! You're promised your new gear is on its way to you within 2 hours from the exact time you order it! Feel great knowing that the second your order hits our warehouse, a flurry of people leap into action zipping your gear on the truck.

Even better, shipping is FREE for VIPs just because we love you! And now VIPs also enjoy FREE RETURNS on all the latest shoes or anything else you need from 7/1 - 7/31. Just follow the return/exchange instructions on your invoice. DON'T WORRY ABOUT THE RETURN FEE. You're covered. Experience the exhilaration of your VIP WARP SPEED PROMISE when you order Monday - Friday 7am to 7pm.


Not a VIP? See shipping rates below.

Order Value Standard Shipping Rate
$0 - $50 $7.99   FREE!*
$50 - $75 $11.99 FREE!*
$75 - $100 $12.99 FREE!*
$100 - $150 $14.99 FREE!*
$150+              $16.99 FREE!*

*Limited Time Non-VIP FREE SHIPPING Offer

Warp Speed Holidays:
You feel great by balancing your fitness with some good 'ol rest and relaxation! Just like you, your team of super packers deserve a day off once in a while, so on the holidays listed below, your Warp Speed Promise will be just slightly delayed. Count on your gear running out the door the next day business day, starting bright and early at 5 a.m.!

  • New Year's Day
  • Memorial Day
  • Fourth of July
  • Labor Day
  • Thanksgiving Day
  • Christmas Day

Not a VIP yet? For a limited time you can enjoy FREE SHIPPING on orders within the 50 United States and US Territories as well as APO/FPO addresses. This special offer excludes international shipments or shipping upgrades.

Need your gear, like, yesterday?
Upgrade to 2-3 DAY Shipping for an additional $5.99 ($7 for non-VIPs) and your order is GUARANTEED on your doorstep in two to three business days when placed by 11:59 am PST Monday through Friday.

Choose Express NEXT DAY Shipping for $14.99 ($20 for non-VIPs) to GUARANTEE your order is in your hands the next business day.

If shipping to a PO Box, APO/FPO address or US Territory, please allow an additional day for delivery.

*SPECIAL NOTE: Altra, ASICS, New Balance, Dunham, Merrell, Thorlo, Mizuno, Nuun, Olukai, CW-X, Hoka One One, Timberland, Salomon, Saucony, Apple, Balega, Body Glide, GU, Trigger Point, YakTrax, Spenco, Nathan and Brooks products are not available to be shipped internationally.

For more information, please visit our International Shopping Page.

Offer Details: Take advantage of your offer on everything except previous purchases, gift cards, monitors, electronics, strollers, and select styles of adidas, Altra, ASICS, Brooks, Hoka One One, Mizuno, Nike, Reebok, Saucony, Garmin, Fitbit, Apple, Polar and Soleus.

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