Seiko Cal. 0731 - 321

The Seiko 0731-321 represents an important milestone in Seiko's 1977 lineup. With its 21mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-5fb5ab2cc61c]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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