Seiko Cal. 3840 - 471

Seiko 3840-471

This Hand-Winding model from 1966 features a 35mm Gold-Plated case. With its 20mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-3238f1f5b3de]

Also known as: Sumo, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
12.3mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
30m
Dial Color
White
Jewels
21j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1966

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