Seiko Cal. 4436 - 691

This Spring Drive model from 1973 features a 46mm Stainless Steel case. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-e14c7c460350]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1973

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