Seiko Cal. 6331 - 560

This Spring Drive model from 1981 features a 45mm Stainless Steel case. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-fbcbbb264d3b]

Also known as: Helmet, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

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