Seiko Cal. 5673 - 737

This Spring Drive model from 1968 features a 45mm Hardlex-Coated Steel case. With its 21mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-1cdd79d48bd9]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1968

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