Seiko Cal. 6181 - 406

This Spring Drive model from 1979 features a 37mm PVD Black case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-25597aac6fd2]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1979

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