Seiko Cal. 4436 - 788

This Spring Drive model from 1979 features a 39mm Hardlex-Coated Steel case. With its 18mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-375b37f99375]

Also known as: Goldfeather, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1979

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