Seiko Cal. 6387 - 534

This Spring Drive model from 1984 features a 40mm PVD Black case. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-e015c38886cc]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1984

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