The Automatic with caliber number 7S26 actually means that they wind automatically when you move the watch, usually by moving your arm. Although automatic movements are relatively old technology they are still in use today, even though in modern versions. Good movements tend to be very precise and are used in some of the world's most expensive and high quality models.
Size of case / Total weight
Thickness: 11.0 ㎜
Diameter: 37.0 ㎜
What's included in the set:
Seiko watch, User's Manual, Gift Box, Warranty
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