Grand Seiko 9SA5, Руководство по эксплуатации

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■ THE GRAND SEIKO STANDARD
Your Grand Seiko watch is built to the very highest standards to ensure that it keeps time
as accurately as possible. In this section, we define the Grand Seiko Standard, what it
means and how your watch is tested against it.
The “Grand Seiko Standard” is our own accuracy standard. Your watch has been tested
individually and has met this standard. All Grand Seiko calibers are tested in the same way and
for the same period.
“The Grand Seiko Standard defined” → P. 17
The movement in your Grand Seiko watch has been tested in our facilities for a period of
17 days, in six different positions and at three different temperatures. It has achieved or
surpassed the standards of accuracy shown on page 17, with the accuracy being defined
as a gain or loss per day (the “mean daily rate”).
We specify “target values” for actual use and it is -1 second to +8 seconds per day.
To judge the precision of your watch against these values, please measure the gain or loss
over a week to ten days, and not just for one day, and in normal conditions.
If the mean daily rate is outside these levels, we will adjust the watch free of charge within
the guarantee period. After that period, such adjustments will be chargeable. Equally, the
adjustment will be chargeable if the watch has been subject to any of the conditions below.
○ The watch has been used in ways that are not in line with the recommendations in this
booklet, such as allowing it to be magnetized.
○ It has been opened or tampered with by anyone other than a Grand Seiko repair center.
○ It has been damaged as a result of a natural disaster such as a flood, fire or earthquake.
○ Guaranteed conditions have been altered.
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THE GRAND SEIKO STANDARD
The Grand Seiko Standard defined
Item Unit Standard
Mean daily rate in six positions Second(s)/day −3.0
〜
+5.0
Mean variation of daily rate Second(s)/day Less than 1.8
Maximum daily rate between
two consecutive daily rates in
the same position
Second(s)/day Less than 4.0
Variation of rate between
positions horizontal and
vertical
Second(s)/day -6.0
〜
+8.0
Maximum daily rate between
mean daily rate and any
individual rate
Second(s)/day Less than 8.0
Variation of daily rate per 1 °C
between 8 °C and 38 °C
Second(s)/day/ °C -0.5
〜
+0.5
Variation of daily rate per 1 °C
between 23 °C and 38 °C
Second(s)/day/ °C -0.5
〜
+0.5
Rate-resumption Second(s)/day -5.0
〜
+5.0
Number of positions in inspection 6 positions
Condition of temperature in inspection 8, 23, 38 °C
Length of tests 17 days
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THE GRAND SEIKO STANDARD
English