Seiko Cal. 6331 - 712

This Spring Drive model from 1982 features a 36mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-f8ab4f60049a]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1982

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