Seiko Cal. 6670 - 131

This Spring Drive model from 1987 features a 39mm PVD Black case. It features a Black dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-f044c674e4e6]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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