Seiko Cal. 6690 - 331

This Spring Drive model from 1982 features a 45mm Stainless Steel case. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-b77d31d54156]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1982

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