Wearing your M200
To measure wrist-based heart rate accurately, you need to wear your M200 snugly on top of your wrist, just behind the wrist bone. For more information see Training with wrist-based heart rate.
After a sweaty training session, we recommend that you remove the device from the wristband and wash them separately under running water with a mild soap and water solution. Then wipe them dry with a soft towel. When you're not working out, you should wear the wristband a little looser, just as you would wear a normal watch.
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 M200 and recharge it. This way both your skin and your device can have a rest, and be ready for your next training event.