31 30
Contents Page
1. Radio technology 31
2. Environmentally friendly solar technology 34
3. Automatic time synchronisation 34
4. Functions 37
5. Selectable LC displays 39
6. Reception indicator 39
6.1 Manual time synchronisation (transmitter calls) 40
6.2 Setting the time zone 42
6.3 Quartz mode 42
7. Ready for use 44
8. Charge level indicator on watches using solar power 45
8.1 Restarting after a complete discharge of the power store 46
9. Charging times 47
10. General information 49
11. Technical information 49
12.
Impermeability
50
1. Radio technology
The most up-to-date way to keep time.
5,000 years have passed since timekeeping began with sundials. In the
interim there have been water clocks, the mechanical clocks of the 13th
century and quartz watches. Now we have the Junghans radio-cont-
rolled watch. This is a watch that, with good reception, will never go
wrong and never need setting. The Junghans radio-controlled watch
is absolutely precise, as it is linked via radio technology to the timing
control of the most accurate clock in the world, For Europe this is the
Caesium Time Base at the Physikalisch-Technischen Bundesanstalt
in Braunschweig (Germany’s Institute of Natural and Engineering
Sciences). For Japan the Caesium Time Base of the National Institute
for Information and Communications Technology (NICT), a public
administration authority organisation. For North America it is the U.S.
Commerce Department’s Caesium Time Base at the National Institute
of Standards and Technology (NIST) in Boulder, Colorado. These clocks
are so accurate that they are expected to deviate by no more than 1
second in a million years.
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