samyaza scrie:
Movement Seiko NH35A care scuze, asa din cutie se incadreaza in standardele COSC. E o mare valoare pentru suma platita.
Sa nu exageram...
Seiko NH35ACitat:
Accuracy:
In the technical documentation, Time Module claims that the NH35A accuracy range is within -20~+40 seconds per day under normal conditions. They recorded these accuracy measurements without the date complication being active. This shouldn’t have any noticeable bearing on the accuracy, but it’s interesting nonetheless.
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COSC:
Citat:
The Testing Process
Okay, so what does this test entail, exactly? As you suspected, it’s rigorous. Each movement is uncased and tested for 15 days in five positions at three different temperatures — 8°, 23°, and 38°C. The mechanisms are left in that specific temperature for 24-hours in a designated position, then, each day, they’re removed and tested.
Using cameras to take measurements, they determine how each movement reacts. All the data is then compiled to average a daily rate, which can only be -4 sec to +6 sec off. But, only when the watch meets all seven criteria will it be given the certificate of approval.
Average daily rate
Mean variation in rates
Greatest variation in rates
The difference between rates in horizontal and vertical positions
Largest variation in rates
Variation in rate depending on temperature
Rate resumption
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