Seiko Cal. 6331 - 938

This Spring Drive model from 1976 features a 40mm Stainless Steel case. It features a Cream dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-90fb518531f2]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1976

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