Samsung Gear S User Manual page 67

•
Do not look directly at the heart rate sensor's
lights. Doing so may impair your vision. Please
make sure children do not look directly at the
lights.
•
Cold ambient temperatures may affect your
measurement; during winter or cold weather,
keep yourself warm when checking your heart
rate.
•
Take heart rate measurements when you are
seated and relaxed. Do not move your body
while taking heart rate measurements. Doing
so may cause your heart rate to be recorded
inaccurately.
•
If you receive a reading that is very different
from your expected heart rate, rest for 30
minutes and then measure again.
•
Smoking or consuming alcohol before taking
measurements may cause your heart rate to
be different from your normal heart rate.
•
Do not talk, yawn, or breathe deeply while
taking heart rate measurements. Doing so
may cause your heart rate to be recorded
inaccurately.
•
Because the heart rate sensor uses light to
approximate heart rate, its accuracy may
vary due to physical factors that affect light
absorption and reflection, such as blood
circulation/blood pressure, skin condition and
location and concentration of blood vessels. In
addition, if your heart rate is extremely high or
low, measurements may be inaccurate.
•
Users with thin wrists may receive inaccurate
heart rate measurements when the device
is loose, causing the light to be reflected
unevenly. If heart rate measurement is not
working properly, adjust the position of the
device's heart rate sensor to the right, left, up,
or down on your wrist, or turn the device so the
heart rate sensor sits firmly against the inside
of your wrist. If the heart rate sensor is dirty,
wipe the sensor and try again. Obstructions
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