Seiko Cal. 5644 - 383

This Spring Drive model from 1987 features a 43mm Titanium case. With its 21mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-cac901b3c260]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1987

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