Seiko Cal. 5631 - 331

The Seiko 5631-331 represents an important milestone in Seiko's 1974 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-f88400114c90]

Also known as: Panda, Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1974

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