Seiko Cal. 6639 - 975

This Automatic model from 1980 features a 36mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-e7fb77d3eb97]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1980

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