Seiko Cal. 0731 - 897

This Spring Drive model from 1983 features a 42mm Hardlex-Coated Steel case. With its 22mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-b485cbe1ed51]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1983

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