You want to go for a run and know how speed and distance can aid your performance. Without heart rate, you can only get so far. The RS300X combines these three to give you a true understanding of the effort you put in. $156.99
    You want to go for a run and know how speed and distance can aid your performance. Without heart rate, you can only get so far. The RS300X combines these three to give you a true understanding of the effort you put in. $156.99

Polar Heart Rate Montitors      Finis Swimp3 and swimming      2XU      Garmin      TheStick the stick massage      SKINS compression tights      Yurbuds      triggerPoint massage      WileyX sunglasses      Tifosi sunglasses      XLAB      Aqua Sphere      Hammer Nutrition      Nathan

 Home Site Map Contact Us Policies
 Customer Service & Repair FAQ
 Free Shipping  - Polar RS300X SD
Affiliate Account Cart Checkout 

Phone: (877) 338-1283
Why TriNowFitness?
  Free FedEx 2nd Day on Orders $150 or greater!
Free USPS Priority $75 or greater!
** not all items eligible **
Polar RS300X SD
McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Internet Payment Gateway

 Shopping Cart
Qty 0
Total($) 0.00

Search by Brand


Join our Mailing List
Remove your Email

Top Sellers
1. Garmin Forerunner 220 USB Charging/Data Cradle
2. Garmin Forerunner 620 USB Charging/Data Cradle
3. Garmin Forerunner 920XT Quick Release Kit
4. Garmin - Bike Speed Sensor and Cadence Sensor
5. Garmin Edge 800
6. XLAB Torpedo System 400
7. Mio FUSE Heart Rate Training + Activity Tracker
8. SKINS A400 Men's Compression Long Tights
9. XLAB Gorilla XT Carbon Cage (2x grip of Gorilla)
10. Garmin Forerunner 920XT Multisport GPS Watch with Running Dynamics and Connected

Our Customers Say
This store is AWESOME!! Watch out for the fake stores or you'll get ri...
-- Zach F
Hello: I just wanted to let you know how pleased I am with your excell...
-- Peter
Less than 2hrs from order to ship... Will update again when order arri...
-- S.T.

Read More or Leave Your Comment


Polar RS300X SD (RS300XSD)

Mail To Friend  Tell a Friend about this Item

Polar RS300X SD

Free FedEx 2nd Day!

  • All Polar Monitors come with Chest Transmitter
    - (except FA20, AW200 and CS100b)
  • All Polar products come with a 2 Year International Warranty
  • All Products are New
  • Lowest Dealer Prices - Guaranteed

For enthusiast runners

You want to go for a run and know how speed and distance can aid your performance. Without heart rate, you can only get so far. The RS300X combines these three to give you a true understanding of the effort you put in. And on top, all the essential heart rate features come along RS300X, on the run and online.

  • Measures your heart rate combined with speed and distance
  • 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 with optional Polar FlowLink™
[ RS300X ] [ RS300X G1 ]
Basic features
Automatic/Manual target zone (% / bpm / HRR%)
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
Over-sized display
User configurable displays
Visual and audible alarm in target zones
Water resistant - 50m
two lines
Cycling features
Bike mount - opt.
Data transfer
Compatible with with Polar FlowLink
GPS features
Battery type - opt.
Full power mode (up to 30 hours with an optional lithium battery) - opt.
Low battery indicator - opt.
Low power battery mode - opt.
SIRF-III chipset - opt.
Shock resistant - opt.
Speed and Distance - opt.
WAAS support (wide area augmentation system) - opt.
Water resistant - opt.
Language features
Display text in English, German, French and Spanish
Polar exercise features
Automatic lap recording - opt.
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 - opt.
Wireless ECG accurate heart rate
Recording features
Average heart rate
Calorie expenditure -
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
Running features
Distance summaries
G1 GPS Sensor - opt.
Run Distance
Polar S1 foot pod™ - Included
Speed displayed in pace, or kmph/mph
Speed/Pace and Distance - opt.
Speed/Pace summaries
Speed/Pace target zones
Target pace
Target pace alarms
Time and Distanced based interval timer
Totals mileage, kilocalories, time training
Trip Odometer
Transmitter belt
Polar WearLink® + 31 coded transmitter (changeable battery)
Watch features
Alarm with snooze
Date and weekday indicator
Dual time zone
Low battery indicator
Time of day (12/24h) with alarm

Ready To Order?

List Price: $249.95
Our Price: $156.99
You Save:$92.96 (37%)

Temporarily Out of stock

Free FedEx 2nd Day!

Mail To Friend  Tell a Friend about this Item
Write a Review   Polar RS300X SD Review
Write a Review   Write a review
Product inquiry   Product Inquiry
Add To Kaboodle

Waiting List:
Add me to the Waiting List

Other products from:

Polar RS300X SD Manual

Product Reviews :
Write a review
Polar RS300X SD Reviews

Miscellaneous :
Email a Friend about Polar RS300X SD
Product Inquiry

Customers who bought this product also bought:

- Polar FlowLink
- Polar Bike Mount 91026028
- NuMetrex HeartBra for WearLink Trans
- BodyGlide Anti-Blister and Chafing Formula - 1.5 oz Stick
- BodyGlide Anti-Blister and Chafing Formula - 2.5 oz Stick
- BodyGlide Bonus Pack - 1.3 Anti-Chafe with .45oz WarmFX Anti-Pain balm
- Bodyglide SUN1 Bodyglide Sun Screen Regular 1.3 Oz
- Buh Bump Electrode Cream - 2.5 oz
- Polar Cardio Bra for WearLink
- Polar F7
- Polar FS3 - Dark Grey
- Polar RS300X
- Polar RS300X G1
- Polar S3 Stride Sensor
- Polar T31 T61 Elastic Strap

Show all products people also bought...

Related Products :
Category : Monitors for Running
Category : RS300x

 Home Contact Us Policies Site Map

Internet Payment Gateway
Solution Graphics
Read Your Store Reviews