Seiko Cal. 3881 - 364

This Spring Drive model from 1977 features a 45mm PVD Black case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-837f964462f7]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1977

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