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The perpetual watch providing it's properly set knows what each calendar is for each year. Your perpetual watch has lost its setting or somebody did a battery change and didn't follow the proper setting procedure and just set the watch to time and didn't set the year would be quite common. Perpetual calendar Once set, the calendar automatically adjusts for odd and even months including February of leap years up to February 28, 2100. It indicates the month, date, day of the week (Cal. 8F33) and the number of years since the last leap year. Use your Seiko's crown to adjust the day and date settings of the watch. The crown is the small knob located on the side of the watch, to the right of the watch face. According to Seiko, you should not attempt to set the calendar between 9 p.m. Making adjustments during this time could cause the calendar to not function properly. The safe setting zone should be between 6:00am and 6:00pm. There are some manufacturers that built the moonphase calculation into the perpetual calendar, so all you have to do is set the time. The GO system allows for quickset micro-adjustments of the moonphase independently of the time setting.
Seiko Perpetual Calendar Setting Instructions
Seiko Perpetual Calendar Setting Instructions
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In the bottom close-up (above), you will
see that the year 1998 is aligned with the “JUN” (June)
marking. In the upper day display (above), the calendar can be
read by finding the day of the week, for example “MON”
(Monday), and then reading the dates in the printed table below
the day display. As you can see, there is a choice of dates of
1, 8, 15, 22 & 29. So, we know it is currently one of those
days in June 1998. It’s up to you to know what date you
want. A useful feature? Maybe, maybe not – but it is interesting
nonetheless.
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Movement
Movement
The movement is the 19 jewel manual winding Caliber 2628. My
example displays an accuracy of -18 seconds per day. The gear
connecting the lower crown to the perpetual calendar display
is indicated by the yellow arrow in the scan of the movement
at right.
This watch is quite eye catching, and has
probably attracted more comments, both complimentary and otherwise,
than any other watch I have worn. It is also available in a gold
plated case with an iridescent red dial. That model must be something
to see. Again the price was extremely low – US$25.
In Conclusion
I purchased both the Sekonda Alarm &
Raketa Perpetual Calendar watches out of curiosity. I was intrigued
to see just what sort of watch the Russians built, and the price
was extremely affordable. Given the low prices I have to say
that the quality of workmanship is quite remarkable. Whilst I
obtained the watches mainly as interesting conversation pieces,
they are definitely suitable for daily wear. How long the Russians
will be pumping out these little mechanical marvels is anyone’s
guess. As a sideline to a more refined collection of fine watches,
Logitech e3500 driver windows 10. these Russian mechanicals make a delightful diversion.
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References:
Source of watches – Dimas
Trading Company
Technical & Historic information :
“Russian Wristwatches” by Juri Levenburg (a good overview
of many Russian watches).