To turn on or off the selected alarm time, press S1.
To set the selected alarm time
press and hold S2 till the
display is as shown on the
right.
Battery Replacement
If the watch display is dim, please replace the battery. If the
watch does not receive signal from the chest belt, please
open the battery hatch and replace the battery of the chest
belt from behind.
"Health warning:
CARDIAC heart rate watch
indicates the level of heart rate when exercising.
It's not a substitute for medical instrument. So
for those who have pacemakers, defibrillators, or
other implanted electronic devices, you better
see your doctor to check the safety and
reliability of the simultaneous use of the watch."