Seiko Cal. 6331 - 823

This Spring Drive model from 1984 features a 45mm Hardlex-Coated Steel case. With its 22mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-28ffc9d2c069]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1984

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