Seiko F6N43 Manual De Instrucciones página 14

 USING THE ROTATING INDICATOR RING
Please notice that some models come with a rotating indicator ring, which
should be used properly.
Turn the ring by pointing the mark to the

Rotating bezel
minute-hand. While certain time goes by,
you can measure the elapsed time from the
distance between minute-hand and figures on
the rotating indicator ring. You can also set the
mark as a desired time to remind you how

long time is still remain for an appointment.
You cannot turn the ring reversely since
it comes with a protection mechanism for
preventing wrong operation by force or shock.
Figures on the ring could also help you to read
the current time easily.
* Depending on design, anti-reversely and 1 minute "click" sound
mechanism on rotating indicator ring does not apply to some models.
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