Seiko Cal. 5631 - 816

This Hand-Winding model from 1989 features a 44mm Titanium case. With its 18mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-ad9077ce5c15]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1989

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