Seiko Cal. 5631 - 908

The Seiko 5631-908 represents an important milestone in Seiko's 1967 lineup. It features a White dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-cba6d9ce105d]

Also known as: Bullhead, UFO

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1967

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