Seiko Cal. 6631 - 736

The Seiko 6631-736 represents an important milestone in Seiko's 1983 lineup. With its 20mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-e9d2b9ba3f03]

Also known as: Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1983

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