Seiko Cal. 3831 - 147

The Seiko 3831-147 represents an important milestone in Seiko's 1966 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d5df2efda401]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1966

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