Seiko Cal. 3867 - 320

This Spring Drive model from 1971 features a 35mm Stainless Steel case. Powered by the 3867 caliber with 28j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-6a97122ac722]

Also known as: Bullhead, Silverwave

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1971

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