Seiko Cal. 0731 - 897

Seiko 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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