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Your Steel HR can operate for up to 25 days on a single charge, depending on your use of the heart rate mode. Using the continuous heart rate mode all the time instead of just during activities will deplete the battery much faster.

To charge your Steel HR, perform the following steps:

  1. Connect the USB end of the charging cable to a power source.
    Note that the minimum current required for charging cable is 60mA.
  2. Position the other end of the charging cable on the back of your Steel HR in such a way that the magnets align.
    You can check the percentage of the battery on the display of the watch while it’s charging.

Note that if you don’t charge your Steel HR right away, the power reserve mode will allow you to keep using it for 20 additional days. However, you will only be able to read the time and track your activity in this mode. You will need to charge your Steel HR to use the heart rate mode.

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