Xiaomi Mi Smart Band 4C User Manual page 11

Precautions
When using the band to measure your heart rate,
please hold your wrist still.
The Mi Smart Band 4C has a water resistance rating
of 5 ATM. It can be worn in the shower, swimming
pool, or while swimming near the shore. However, it
cannot be used in saunas or while scuba diving.
The touch button and touchscreen of the band do
not support operations underwater. When the band
comes in contact with water, use a soft cloth to wipe
away excess water from its surface before using it.
During daily use, avoid wearing the band too tightly.
Keep its contact area dry and regularly clean the
band straps with water. Immediately stop using the
band and seek medical assistance if the contact area
on your skin shows signs of redness or swelling.
This band is a not a medical device, any data or
information provided by the band should not be used
as a basis for diagnosis, treatment, or prevention of
disease.
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