Seiko Cal. 6397 - 471

This Spring Drive model from 1981 features a 36mm PVD Black case. It features a White dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-53b3ed21656b]

Also known as: Monster, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1981

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