Techno Line WT 768 Instruction Manual page 20

Reset
If the clock shows an incorrect time or after changing the battery, press the
RESET button on the case back panel to re-start the alarm clock. The
hands (minute, hour) are adjusting again to 12 o'clock position and the
clock enters into signal reception mode. In successful signal reception the
time will be adjusted to the correct radio controlled time according to the
DCF-77 reception signal.
Precautions
This main unit is intended to be used only indoors.
Do not subject the unit to excessive force or shock.
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