Seiko Cal. 5631 - 129

The Seiko 5631-129 represents an important milestone in Seiko's 1973 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-5cafe53ee4d6]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1973

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