Seiko Cal. 5631 - 424

The Seiko 5631-424 represents an important milestone in Seiko's 1985 lineup. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-1d376d1b7970]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1985

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