6
to the main interface. It will distinguish between high and
low heart rates based on the last heart rate value for the
second time.
4.1
The heart rate sensor shall be closely attached to and
well contacted with skin in measurement of heart rate. If
the smart bracelet is too loose, the sensor light will
expose, which can result in inaccurate measurement. It is
prohibited to look steadily at the green light of sensor;
otherwise, it may make eyes uncomfortable.
4.2
The user has to keep sitting still though the device is
used for measuring heat rate in a real-time and dynamic
way; otherwise, the time for measurement of heart rate
will be delayed or no data can be measured. The user
should not move until the smart bracelet measures the
value and then he can check the data of real-time
dynamic heart rate.
4.3
It is necessary to measure heart rate after a rest if
there is a big difference in measured data. The average
value obtained through five times of consecutive
measurement is more accurate.
4.4
The device is used to measure heart rate in a real-
time and dynamic way, so the heart rate is varied with
different conditions such as speaking, dining and
drinking. It shall be subject to the actual case.
4.5
Be sure that there is no dirt at the bottom of the heart
rate sensor during measurement. Skin color, hair
density, tattoo and scar may affect the accuracy of the
measured results, in which cases it is necessary to re-
measure the heart rate.
5.
Sport modes
