Omron HR-310 Instruction Manual - Page 25

clicks out of place., Replace the old battery and close the battery door by twisting

Page 25 highlights

BATTERIES The chest belt uses a CR2032 3V battery, which has already been installed. If the heart rate signals become unsteady or stop your chest belt battery may need replacing. To replace the chest belt battery: 1. Using a coin, twist the battery door counter-clockwise until it clicks out of place. 2. Replace the old battery and close the battery door by twisting it clockwise until it is firmly in place. 25

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25
BATTERIES
The chest belt uses a CR2032 3V battery, which has already been
installed. If the heart rate signals become unsteady or stop your chest
belt battery may need replacing.
To replace the chest belt battery:
1.
Using a coin, twist the battery door counter-clockwise until it
clicks out of place.
2.
Replace the old battery and close the battery door by twisting it
clockwise until it is
rmly in place.