Polar Electro RS300X Getting Started Manual

WELCOME

POLAR RS300X 

HEART RATE MONITOR 

Shows your heart rate, speed and 

distance in real time. 

Helps you train at the right intensity 

with editable personal sport 

zones and exercise types (Interval, 

OwnZone, Basic and Free). 

You can choose the information you 

want to see by adjusting the display 

options.

POLARPERSONALTRAINER.COM 

WEB SERVICE

Just sign up and sign in to the 

service. Then install WebSync app 

for transferring your training data. 

You need the Polar FlowLink data 

transfer unit (sold separately) to 

transfer your training information. 

Analyze your training, track your 

progress and share it with 

your friends. 

Visit the Flow web service 

as well at 

polar.com/flow

POLAR HEART RATE SENSOR H1*

Wear the comfortable strap and 

connector around your chest in order 

to get an accurate heart rate on the 

heart rate monitor during training.

* H1 was previously called WearLink

and the name is still in use in the 

RS300X user interface.

G1 GPS SENSOR and S1 FOOT POD are available 

accessories for measuring speed and distance.

Thanks for choosing Polar! In this handy little guide we’ll walk you through the basics of RS300X. 

You can download the full-length user manual and the latest version of this 

guide at 

polar.com/support

. For more help, there are some great video tutorials 

at 

polar.com/en/polar_community/videos

 you may want to check out.

GET TO KNOW YOUR RS300X

GET STARTED

First, press and hold any button for one second to activate RS300X 

and go through the Basic Settings. 

To get the most accurate and personal training data, it’s important 

that you’re precise with physical settings like your age and weight.

WEAR THE HEART RATE SENSOR

1. Moisten the electrode area of 

the strap.

2. Clip the strap around your chest 

and adjust the strap to fit snugly.

3. Attach the connector.

After training, detach the 

connector and rinse the strap 

under running water to keep 

it clean. For more detailed 

instructions, see the full user 

manual at 

polar.com/support

.

TRAINING WITH YOUR RS300X

TO GET YOU GOING

1. Wear your RS300X and the heart rate sensor (H1 or WearLink). 

2. In time mode, press START. Select (Settings > Exercise) the 

exercise type (Free, Basic, Interval or OwnZone) you want to use. 

Free exercise is set as default. Basic exercise, for example, guides 

you to train with moderate intensity. 

3. Wait until your heart rate monitor finds your heart rate and 

press START again.

You can see your heart rate, the amount of calories you have 

burned, duration of the session and zone information in real time 

while training. Visit 

polar.com/support

 to learn more about the 

benefits of training at different intensities.

TO PAUSE AND STOP TRAINING

To pause your training session, press BACK. To continue training, 

press START. To stop the session, press BACK again. 

Find details of your training by browsing File and selecting the  

training session you want to see.  There you can see: 

» how long your session lasted

» the amount of calories you burned

» your average and maximum heart rates

» the time you spent training on each of the five heart rate zones 

Browse through the menu by pressing UP or DOWN. Confirm 

selections with the START button, and return, pause and stop with 

the BACK button.

USEFUL TIPS

You can change training views during training by browsing UP or 

DOWN and take a lap by pressing START. Press and hold LIGHT 

to access the quick menu, where you can, for example, adjust the 

HeartTouch. When HeartTouch is on, you can access different 

training information during training by bringing the RS300X close to 

the heart rate sensor.