How do I wear my M430?

Read the tips below to ensure that your M430 functions optimally during training.

Tight for training

Wear your M430 for a few minutes prior to starting the heart rate measurement in order for your skin to adapt to the device. To get accurate heart rate readings, you need to wear the M430 snugly on top of your wrist, just behind the wrist bone. The sensor on the back must be in constant touch with your skin, but not too tight to prevent blood flow or feel uncomfortable. Movement between the sensor and your skin can interfere with the readings.

Wash and dry after training

After a sweaty training session, we recommend that you wash the M430 under running water with a mild soap and water solution. Then wipe it dry with a soft towel.

Loosen after training

Loosen the wristband a bit after training for a more comfortable fit and to let your skin breathe.


Every once in a while it’s a good idea to let your wrist have a breather, especially if you have sensitive skin. Take off your running watch and recharge it. This way both your skin and your device can have a rest and be ready for your next training event.


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