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● The heart rate figures may not be accurate depending on measurement conditions and surroundings.
● Take heart rate measurements when you are seated and relaxed.
● If heart rate measurements are taken at low temperatures, the result may be inaccurate.
● Do not move your body while taking heart rate measurements. Doing so may cause your heart rate to
be recorded inaccurately.
● Users with thin wrists may receive inaccurate heart rate measurements.
● Inaccurate measurements occur when the device is loose and the light used to provide the
measurement is reflected unevenly.
● If the measurement is very different from the expected heart rate, rest for 30 minutes and then
measure it again.
● Measurements are calculated using average values and should be repeated at least five times.
● During winter or in cold weather, keep yourself warm when measuring your heart rate.
● 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.
● If your heart rate is extremely high or low, measurements may be inaccurate.
● Obstructions between the device’s strap and your wrist, such as body hair or other objects, may
prevent the light from reflecting evenly.
● Heart rate measurements taken for infants and toddlers may be inaccurate.
● Do not look directly at the heart rate sensor’s lights. Doing so may impair your vision.