Citizen CH-617 Mode D'emploi page 18

b. Recalling data:
(1). Press " M " button. If there is no data in the memory, only
TIME /DATE will appear on the display. If yes, the first
reading will be the average of the latest 3 measurements.
(The average value dose not appear if there are two or
fewer measurements stored in memory.)
(2). Press " M " button again, the latest measurement
will appear with the number as well as the recording
date and time. The data called up on the display is
numbered accordingly. After reading the recalled data
as rotator 99-set of the stored data, press " M " to
switch to normal time.
(3). To discontinue in the midst of reading of the data,
press "
c. Erasing data:
(1). Press the "M" button.
(2). Press hold "
"CLA" show up on the display for 3 seconds.
E. To change batteries:
When "
Change the batteries or it will not be possible to take blood
pressure measurement.
All batteries used must be the same type. Do not mix alkaline,
standard(carbon-zinc) or rechargeable (cadmium) batteries.
Do not mix old and new batteries.
" button.
" and "
" show up on the display, the battery is weak.
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" button to clear memories.