Seiko Cal. 5631 - 606

The Seiko 5631-606 represents an important milestone in Seiko's 1977 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-b3b88fd54285]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1977

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