Seiko Cal. 4436 - 213

This Spring Drive model from 1968 features a 39mm PVD Black case. With its 19mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-433ec265e4e8]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1968

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