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MHR(male) = 220 – user age
MHR(female) = 226 – user age
Important Note:
This formula only gives an estimation based on statistics which might not
reflect precisely your own MHR. For a better evaluation, you can have your MHR clinically
measured or perform a field test under a trainer supervision.
• This watch displays the percentage of
maximum heart rate calculated by using the formula:
% of MHR = acquired heart rate / MHR x 100 %
• This watch will compare this result with the
upper and lower limits previously set and alert
you to take actions e.g. slow down or speed up,
to return to the objective heartbeat zone.
An example
The following exemplifies the heart rate alert
function:
A 60 years old man sets his objective heartbeat
zone with a lower limit of 104 BPM (65% of his
MHR) and an upper limit of 136 BPM (85%
of his MHR).
• During exercise, he takes a
measurement at 144 BPM
• His calculated MHR = 220 - 60
= 160 BPM
• Percentage of maximum heart rate
= 144 / 160 x 100 % = 90 %
His heart rate has passed the upper limit
of 136 BPM (85% of his MHR). The watch
will beep twice to alert him that he slows
down to go back to his objective heartbeat zone.
