Seiko Cal. 3881 - 187

This Spring Drive model from 1991 features a 34mm PVD Black case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-1e56cb43de85]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1991

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