Seiko Cal. 5631 - 257

The Seiko 5631-257 represents an important milestone in Seiko's 1989 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-0e367b9825de]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1989

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