Seiko Cal. 0731 - 691

This Hand-Winding model from 1972 features a 38mm Hardlex-Coated Steel case. With its 21mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-4d3728307cc9]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1972

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