Techno Line WT 768 Instruction Manual page 17

times a day with the DCF-77 signal reception signal (also
independent setting of summer- and winter time).
b. Manual signal reception: Press and hold the REC button longer
than 3 seconds to start the manual signal reception. The hands
(minute, hour) are adjusting to 12 o'clock position and the clock
enters into signal reception mode. If the signal is successfully
received, the hands adjust automatically to the correct radio
controlled time. This procedure takes approximately 2 to 5
minutes. If the signal reception is failed, the alarm clock takes the
previously set time again . After the next successful signal
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