Seiko Cal. 5643 - 436

Seiko 5643-436

This Spring Drive model from 1977 features a 37mm Stainless Steel case. It features a Green dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-e4ee077b9540]

Also known as: Arnie

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
12.2mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Green
Jewels
35j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1977

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seikata-wm-e4ee077b9540