Seiko Cal. 6331 - 927

This Spring Drive model from 1984 features a 40mm Stainless Steel case. It features a Burgundy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-6eb8f663b6d3]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1984

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