Seiko Cal. 0731 - 131

The Seiko 0731-131 represents an important milestone in Seiko's 1965 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e782224e2a99]

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1965

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