Seiko Cal. 5643 - 143

This Automatic model from 1971 features a 37mm Hardlex-Coated Steel case. With its 22mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-f10bb00ec156]

Also known as: Tuna, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1971

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