Seiko Cal. 4435 - 641

This Spring Drive model from 1977 features a 36mm PVD Black case. With its 20mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-269b90c23c27]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

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