Seiko CAL. H021 Instructions Manual page 32

STATIC ELECTRICITY
The IC (Integrated Circuit) used
in your watch will be affected by
static electricity which may disturb
the display. Keep the watch away
from close contact with objects such as TV
screens which emit strong static electricity.
32
LIQUID CRYSTAL PANEL
The normal life expectancy for
a l i q u i d c r y s t a l p a n e l i s
approximately 7 years. After that
it may decrease in contrast,
7 Years
becoming difficult to read. Please contact
your AUTHORIZED SEIKO DEALER or
SERVICE CENTER if you wish to have a
new panel fitted (guaranteed one year).