Seiko Cal. 5640 - 328

This Spring Drive model from 1985 features a 41mm Titanium case. With its 19mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-13f24e9a07a7]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1985

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