Seiko Cal. 3831 - 712

This Spring Drive model from 1970 features a 35mm Stainless Steel case. It features a Black dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-05ae482b569c]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1970

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