Omron SC100 Instruction Manual page 7

NOTE:
If it is not placed horizontally, incorrect measurement may occur.
About the battery
(1) If the display shows
Please replace the battery.
(2) The battery is one 3V lithium battery.
(3) sign may not appear when old battery is used.
(4) Battery life is approximately 1 year (measured 4 times a day).
(5) Remove the battery when not using the unit for a long time. If the unit with
the installed battery is not used for long time, it may cause battery leakage and
product failure.
bATTERy INSTALLATION
it means the battery is running out.
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