Seiko Cal. 5646 - 639

Seiko 5646-639

This Automatic model from 1966 features a 34mm Gold-Plated case. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-a7c026c363d3]

Also known as: Sumo, Shogun

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
11.2mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
Navy
Jewels
36j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1966

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