Casio 3069 Manual page 5

• The watch continues to operate, even when it is not exposed to light.
Leaving the watch in the dark can cause the battery to run down, which will
cause some watch functions to be disabled. If the battery goes dead, you
will have to re-configure watch settings after recharging. To ensure normal
watch operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light.
Solar cell
(Converts light to
electrical power.)
Charge
Rechargeable battery
Bright light
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
LEVEL 4
Battery discharges in the dark.
Dis-
charge
LEVEL 1
LEVEL 2
Some
LEVEL 3
functions
LEVEL 4
disabled
E-3