Seiko Cal. 5643 - 642

Seiko 5643-642

This Automatic model from 1972 features a 34mm PVD Black case. With its 20mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-6f7f0d55dff0]

Also known as: Tuna, Baby Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
34mm
Case Thickness
14.7mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
180m
Dial Color
Green
Jewels
29j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1972

Related Models

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