Seiko Cal. 6631 - 234

The Seiko 6631-234 represents an important milestone in Seiko's 1987 lineup. With its 19mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-892ea05b8a34]

Also known as: Golden Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1987

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