Seiko Cal. 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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