Accu-Chek Performa Owner's Booklet page 39

4. Press and release
or to select
"On" or "OFF." Press
and release to set
your choice.
5. If you select "On," the
hour flashes. "A-1" and
the bell symbol remain on
the display.
6. Press and release
or to select the
hour. Press and release
to set the hour.
37