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English
CAL. 7R68 “SPRING DRIVE”
SPRING DRIVE MECHANISM
Like a traditional mechanical watch, the mainspring drives the watch. What is new
is that it also runs a generator which in turn oscillates a quartz crystal. This regulates
the movement of the hands as accurately as a traditional quartz watch.
The second hand moves smoothly without steps.
POWER RESERVE INDICATOR
It shows the extent to which the mainspring is wound.
UP TO 48 HOURS OF CONTINUOUS OPERATION
When the watch is wound fully, it keeps operating for approximately 48 hours.
Until now, quartz and mechanical watches existed as two distinct entities.
Driven by a mainspring, this watch delivers the accuracy of a traditional quartz watch
thanks to the use of the Spring Drive Mechanism newly developed by SEIKO.
SWEEP-MOVEMENT SECOND HAND
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