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D. operational capability

to ensure that your junghans clock is always ready for operation you 

should take care to ensure that it has sufficient energy. if the battery 

does not have sufficient energy to display the correct time, please

replace this as soon as possible.

there should be a lapse of at least 2 minutes between removal and 

insertion of a functioning battery.
please ensure appropriate disposal of the battery, in keeping with 

statutory regulations.

E. technical data

J738 quartz movement

battery type 

1,5V alcaline AA, LR6

typical lifetime 

2 years

operating temperature 

0°C to 50°C

J780 radio controlled movement

received transmitter 

DCF 77,5 (Europe)

battery type 

1,5V alcaline AA, LR6

typical lifetime 

> 1 year

operating temperature 

0°C to 50°C

setting time with undisturbed reception (DCF)  approx. 3 minutes

switch from CET to CEST and reverse 

automatic

time comparison with time signal transmitter  every 2 hours

free of charge and ftz – approved

subject to technical alterations 

declaration of conformity

Uhrenfabrik Junghans GmbH & Co. KG hereby declares that this 

clock corresponds to the underlying specifications and other relevant 

regulations of directive 1999/5/EC.

a corresponding declaration of conformity can be requested at 

[email protected].

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