Seiko Cal. 5631 - 534

The Seiko 5631-534 represents an important milestone in Seiko's 1989 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-1222698fb0c2]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1989

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