Seiko Cal. 4430 - 163

This Spring Drive model from 1975 features a 43mm PVD Black case. With its 18mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-6f9aa41ec122]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1975

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