Seiko Cal. 3812 - 591

The Seiko 3812-591 represents an important milestone in Seiko's 1974 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ff3479ed19f9]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1974

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