How should I wear my M600?
Tight for training
To get accurate heart rate readings, you need to wear the M600 snugly on your wrist, just behind the wrist bone, with the display facing up. The sensor must be in firm skin contact, but not too tight to prevent blood flow.
Loosen after training
Loosen the wristband a bit after training for a more comfortable fit and to let your skin breathe.