Seiko Cal. 3831 - 381

This Solar model from 1971 features a 38mm PVD Black case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-54412f99cb55]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1971

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