user manual
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•DonotsubjecttheDigitalHeartRateMonitortoexcessiveforce,
shock, dust, temperature, or humidity. Such treatment may 
result in malfunction, a shorter electronic life span, damaged 
batteries, or distorted parts.
•DonottamperwiththeDigitalHeartRateMonitor’sinternal
components. Doing so will terminate the Monitor’s warranty 
and may cause damage. 
•TheDigitalHeartRateMonitorcontainsnouser-serviceable
parts, except batteries.
Digital Heart Rate Sensor Battery
If your heart rate readings become erratic or stop, you may need 
to replace the battery on your Digital Heart Rate Sensor. You can 
change the battery yourself without any special tools. 
This product uses a CR2032 lithium battery for the Digital Heart Rate 
Sensor. To change the battery:
BATTERY
OPEN
BATTERY
1. Open the Sensor battery lid with a coin, turning the coin counter-
clockwise.
2.  Replace the battery with a new CR2032, 3V lithium battery with 
(+)facingyou,takingcarenottotouchthetwocontactsand
discharge the battery.
3.  When you have finished inserting the battery, press the reset 
button(locatedinthelowerleftcorner)withatoothpickor
straightened paper clip and close the lid with a coin -- screwing 
in a clockwise direction.
To test the new battery after you have inserted it: 
1.  Move away from any possible sources of electrical or radio 
interference.
2.  Wet the Digital Heart Rate Sensor pads and securely fasten the 
chest strap below your sternum. 
3.Whilewearingthewatch,presstheHEARTRATEbutton.Asetof
threedashes(---)andtheashingheartrateiconwillappearon
the display.
4.  If you do not see a flashing heart icon on your watch, reinstall the 
sensor battery.
NOTE: It is not necessary for a heart rate value to appear on the 
display during this test.










