Seiko Cal. 3891 - 442

The Seiko 3891-442 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8ed8b7f46dd0]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1977

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