Seiko Cal. 3813 - 972

This Automatic model from 1973 features a 40mm PVD Black case. It features a Black dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-6069717786fb]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1973

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