Omron i-C10 Instruction Manual page 14

2. Preparation
Notes on Adjusting the Date and Time Setting
If you need to adjust the date and time for some reason, or if the date
and time has been reset after replacing the batteries, adjust the date
and time between 10:00 and 18:59. This will avoid problems with
morning and evening weekly averages stored in memory.
To adjust the date or time at a later stage, start the unit in the off
position. Follow the steps below.
1.
Press and hold the SET button.
The auto mode symbol
oFF) will appear on the display for the user ID selected.
If the year is not flashing, press the SET button once or twice
until the year is flashing.
The year flashes on the display.
2.
Refer to Chapter 2.2.2 to start setting the date and time.
With this manual setting of date and time the unit needs to be
manually shut off. It will not automatically turn off after the
minutes have been set.
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and the current setting (on or