Kalenji ONrhythm 900 watch

ONrhythm 900

Ref: 8501811, 8501812, 8542938, 8542939

We have designed this watch for runners seeking a simple watch which measures the heart rate on the wrist and calculates calories. It helps you to learn to run at the right pace, feel good, increase endurance, lose weight and progress as a runner.

FIRST USE

How do I position my watch on my wrist?

Your ONRHYTHM 900 has an optical heart rate sensor to help you find the right pace when running.

To guarantee precise heart rate readings:

 

- wear the watch with the face above your wrist

- position the watch after the bone, in contact with your skin

- adjust the strap so that it's tight but comfortable

 

The watch shouldn't turn or move on your wrist.

How do I change the display when working out?

Once the heart rate monitor is on, you can change the display with the buttons at the bottom right and left of the watch (marked with arrows on the watch face).

 

3 displays:

Display 1: Stopwatch and heart rate monitor

Display 2: Heart rate and intensity zone

Display 3: Time and calories burnt.

How are my intensity zones calculated?

Your intensity zones (warm-up, comfort, endurance, resistance and high resistance) are calculated automatically using your maximum heart rate.

 

These values are calculated by the watch according to your age and sex: 

Warm-up: 50 to 60% of your max. HR

Comfort (also called fundamental endurance): 60 to 70% of your max. HR

Endurance: 70 to 80% of your max. HR

Resistance: 80 to 90% of your max. HR (also called High Resistance): 90 to 100% of your max. HR

How do I change my maximum or resting heart rate?

You can manually set your maximum heart rate in the "Settings" menu, then "User"”. Confirm the proposed settings until you reach "max. HR" or "resting HR".

How do I manually set up a zone?

You can manually set up heart rate zones for running.A sound alert will inform you that you have left a zone.

To set up zone alerts, go to the Settings menu, then Activity, then Zones. Select ON, then the minium and maximum values for your zone.

To reset the automatic intensity zones (warm-up, comfort, endurance, etc.) select OFF.

PRECISION

Is the ONRHYTHM 900 optical heart rate watch suited to all sports?

The technology in the ONRHYTHM 900 heart rate sensor is ideal for sports with repetitive movements such as running, walking, and working out on a cross-trainer or exercise bike.

Vibrations may cause errors. When cycling on a particularly uneven road or trail, you may notice variations in your heart rate.

You may notice errors when doing sports with unsynchronised movements such as fitness lessons, weight training, and racket or team sports

Does the ONRHYTHM 900 optical heart rate sensor work on all types of skin?

The technology in the ONRHYTHM 900 heart rate sensor is designed for all skin colours and degrees of body hair. On dark or tatooed skin, less light is emitted by the skin. The sensor adapts by either injecting more light or adjusting the sensitivity of the light sensor. If, however, you do have a problem, contact our team with the button at the bottom of this page.

Why is my heart rate incorrect?

We chose the latest technology in the Philips sensor which is one of the most reliable sensors on the market. Some factors may, however, interfere with the heart rate reading:

 

YOUR WATCH IS IN THE WRONG POSITION:

The position of your watch must be adjusted correctly and be comfortable. If the strap is too loose, the watch will not be able to read the signal correctly.

 

YOUR SENSOR IS DIRTY:

If the back of your watch is dirty (soil, sun screen, etc.) the sensor may be less effective. Your ONRHYTHM 900 watch is watertight.You can wash it in clean water.

 

YOU DO A NON-REPETITIVE SPORT

Readings made by the wrist-based optical heart rate monitor are optimal for sports with repetitive movements such as running and working out with a cross-trainer or exercise bike.

We recommend a chest strap heart rate monitor for fitness sports such as weight training etc.

To improve heart rate signal readings when you start working out, start it several minutes before your session so that it has time to search the satellites and your heart rate. Once you are ready, you can start the stopwatch.

 

THE WEATHER IS VERY COLD:

- In cold weather, your blood vessels shrink which can be interpreted by the heart rate monitor as a low or high rate.

 

INTERVAL TRAINING:

- The watch is a long way from your heart. The blood will a take a bit longer to reach your wrist. When interval training, the heart rate signal reading is delayed.

 

TATOOS:

- You may observe errors in heart rate readings if you have tatoos on your wrist.

 

OTHER RAISONS:

- The vascularisation on your right and left arm may be different. If results are not optimal on one arm, try the other arm.

BATTERY

How can I recharge my ONRHYTHM 900 watch?

To charge your ONRHYTHM 900 watch, connect it with the cable provided to your computer, to a nomad charger or a 5V 1A mains adapter.

I have lost or broken my cable or my strap. Where can I find a new one?

If you have lost or broken your cable or strap, please contact our technical team with the button at the bottom of this page.

OUR TIPS

Heart rate watch
THE HEART RATE IN BRIEF                                                            
Kalenji ONmove 500 HRM
HOW DOES AN OPTICAL HEART RATE MONITOR WORK?                                         
Kalenji ONrhythm 900 heart rate watch
WHY RUN WITH A HEART RATE MONITOR?                                                           
Kalenji ONmove 500 HRM
HOW DO I CALCULATE MY MAXIMUM HEART RATE?
ONmove 220 cardio
HOW DO I USE A HEART RATE MONITOR?  
Kalenji ONcoach
UNDERSTANDING HEART RATE ZONES
Would you like to contact us? Access the contact form

INSTRUCTIONS

notice-pictogramme

Looking for the product instructions? Click here to download.

TOP OF PAGE